题目内容：
根据以下材料回答题 Millionsofhamburgersareeatenbypeopleineverycorneroftheworldeveryday．TogetherwithhotdogsandCoca-Cola,hamburgershavebeenthemostimportantAmericancontribution(贡献)tointernationaleatinghabits．
Thename"hamburger"hasnothingtodowithham(火腿)．ItisbelievedthatthehamburgerwasfirstbroughttotheUnitedStatesbyGermansfromthecityofHamburgsometimeinthe1850s．FromthenonthehamburgerbecameakindofpopularAmericanfastfood．
NowyoungpeopleinAsia,EuropeandSouthAmericahavelearnedtoeatwhileonthemove;ahamburgerinonehandandasoftdrinkintheother．TherehavebeencriestoangerfromItalyandSpainabouttheshorteningoftheusuallunchbreak．Instead,youngpeoplehavedisco-veredalunchforwhichtheydon'thavetostopatall．
However,therearecloudsoverthehamburger'sworld．Peoplewhoconcernabouthealthdislikethehighanimalfatinthehamburger．Theythinkthetimesavedseemsahighpricetopayforpoorhealth．Thepackagesinwhichhamburgersareusuallyservedarecausingseriouspollutionproblemsinmanylargecities．BighamburgercompaniesaredestroyinglargeareasofSouthAmericanrainforesttoproducethecheapmeattheyneed．So,willthehamburgercelebrateitsnextcentury?
Inwhichwaydohamburgerschangepeople'seatinghabits? A．Peoplecanhavetheirmealsatanytimeoftheday．
B．Theycanbeservedinanyrestaurant．
C．Peoplecanhavethemwithsoftdrinks．
D．Mealtimecanbegreatlyreduced．
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