As They Proceed Through Middle Age,Tony and Martha Are Not

As they proceed through middle age,Tony and Martha are not having sexual relations quite as often as they did when they were younger.From what we know about sexual development in middle age,we can expect that this is because Tony and Martha:

A) have less time for and interest in sex.
B) are not as healthy as they once were.
C) do not find each other as attractive as before.
D) have reduced sexual drives as a result of hormonal changes.