문제 내용: 다음 글의 내용과 일치하지 않는 것은?
선택지 1: A majority of Americans are not getting enough choline.
선택지 2: Choline is an essential nutrient required for brain development.
선택지 3: Foods such as liver and lima beans are good sources of choline.
선택지 4: The importance of choline has been stressed since the late '90s in the U.S.