Which of the following people can apply for naturalization? Please choose the correct answer.
A: A lawful permanent resident who has lived in the U.S. for 48 months
B: A lawful permanent resident who has lived in the U.S. for 60 months
C: A lawful permanent resident who has lived in the U.S. for 18 months
D: A lawful permanent resident who has lived in the U.S. for 36 months