Which of the following people can apply for naturalization?

[] a lawful permanent resident who has lived in the U.S. for 18 months
[] a lawful permanent resident who has lived in the U.S. for 36 months
[] a lawful permanent resident who has lived in the U.S. for 60 months
[] a lawful permanent resident who has lived in the U.S. for 48 months

[] a lawful permanent resident who has lived in the U.S. for 60 months