题目内容：
根据短文，回答题OuranalysisthereforesuggeststhattherealproblemfacingtheblackcommunityliesintheeducationalobstaclespriortothePhi)programsratherthaninthepour-inofforeignstudents．Equally，ouranalysissuggeststhatweoughttotreatforeignstudentsasanimportantsourceofbraingainforusandthatweoughttofacilitate。ratherthanhinder，theirarrivalandtheirentryintoourworkforce．Howcouldthisbedone7Thereisalong-standingprovisioninourimmigrationlawsunderwhichthosewhobringinacertainamountoffinancialcapital(whichwill“createjobs”)areallowedtoimmigrate：Aforeignerwhoinvestsonemilliondollarsinacommercialenterpriseestablishedinahigh-unemploymentarea，whichcreatesjobsforatleasttenAmericans。isautomaticallygivenimmigrantstatus(i．e．，agreencard)．Wesuggestextendingtheideafromfinancialtohumancapital．Currently．graduatestudentswhowishtostayonintheUnitedStatesaftertheirPhDsmustbesponsoredbytheiremployers，aprocessthatimposessubstantialhardshipbothonthestudentsandonsmalleremployers．
Thestandardprocedureisintwostages．First，theUSDepartmentofLabormust，onthebasisofaUSemployer’ssponsorship，certifythat“noAmericancandothisjob”．Then，thewould-beimmigrantmustapplyforimmigrantstatusattheImmigrationandNaturalizationService(INS)．Ifallgoesright，theentireprocesstakesabouttwovears(considerablymoreforcitizensofcertaincountries)．Butthingsmaynotgoright：therecouldbeDroblemsateitherstage．Thus，theemployerorthe“alien”musthireanimmigrationlawyer．Thecurrentprocess，then，iscostlybothtothewould-beimmigrantandtotheemployer(andhence，itunfairlyDenalizessmallerfirmsthatcannotaffordthisexpensiveprocessandsocannotrecruitthisforeigntalent)．
TheImmigrationandNaturalizationActofl990introducedanalternativerouteforprofessorsandresearcherstosecureimmigrantstatus．Essentially，iteliminatestheaverageprocessingtimetoaboutoneyear,butitdoesnoteliminateanyoftheuncertaintyortheneedforexpensivelegalcounsel．
WebudgetthatautomaticgreencardsbegiventoallthosewhoobtainaPhi)inthescienceandengineeringprogramsatouruniversities．Inadoptingsucha“guaranteedgreencard”proposal，wewouldberecognizingtheimportantcontributionthatthesestudentsmaketoourleadingpositioninsciencebygivingequalweighttohumancapitalandfinancialcapital．Priortothistext，theauthorhasmostprobablymadeananalysisof___________． A．braingainintheUnitedStates
B．thecauseofproblemsoftheblackpeople
C．theUSeducationalprogramsforblacks
D．theprocedureofforeignstudents’immigration
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