题目内容：
根据以下材料，回答题U.S.PresidentBarackObamasaidFridayoncampaigntrailhecanmakethecaseforasecondterm,andvoterswillcometoseehimasthecandidatebestpreparedtoserveaspresidentbynext
year'selections,accordingtoaninterviewhegavetotheU.S.media.
InanexclusiveinterviewhegavetheAssociatedPress,Obamaacknowledgedthatthestateoftheeconomycouldbehisbiggesthurdletoclearinwinningreelection.
"Ithinktheeconomy'sgoingtocontinuetoimprove,andIthinkI'mgoingtobeabletomakeaneffectivecasethat...Iamthepersonwhoisbestpreparedtofinishthejobsothatweareontrack
tosucceedinthe21stcentury,"ObamasaidinthevideointerviewconductedinChicago,whereheattendedfund-raisingeventsthepreviousnight.
"IthinkIcanmakethatcase,andIthinkthat,inthedebatesthattakeplaceoverthenext18months,theAmericanpeoplewillfeelthatIdeserveasecondterm,"hesaid.
ChicagoisObama'shome,andthepresident'sreelectioncampaignheadquartersisalsolocatedthere.HemadethereelectionannouncementonApril4.AccordingtoaGalluppollreleasedonFriday,
Obama'sapprovalratingstoodat41percent,analltimelow.Gallupsaidthefigurewasfueledbyeconomicdissatisfaction.
Thebestheadlineforthisarticleis__________.
A．ObamaSaysHeDeservesaSecondTerm
B．ObamaBecomestheAmericanPresidentAgain
C．ObamaHasPlannedtoResignFromPresident
D．ThereAreLotsofHurdlesinFrontofObama
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