Older People Often Complain That Their Food Has No Taste

Older people often complain that their food has no taste. Why?

A) Their taste buds no longer renew themselves after the age of 60.
B) The flavor of food depends totally on the taste buds, and older people have very few left.
C) They have most likely experienced a decline in the sense of smell.
D) Older people have to eat their food so bland that it has no taste.