Mary Marries a Much Younger Man; in Fact, Mary Is

Mary marries a much younger man; in fact, Mary is 75 years old, while her new husband, Aaron, is 25 years old. One of the biggest problems they have is getting used to each other's sleep routines. Aaron goes to bed about 11:00 pm each night and gets up just
Before 7:00 am each morning. This is hard for Mary who, because she is so much older:

A) sleeps a little less than six hours a night.
B) sleeps about as much as a newborn, around 12 hours a night.
C) needs more sleep than the eight hours a younger adult usually sleeps.
D) takes only two hour catnaps all night long.