为自己加油

Choose the closest paraphrased version after the following sentence or the italicized part.

Many people have a rather acute sense of the shortness of each lifetime.（ ）

A.
Many people realize that they are short of time.
B.
Many people feel keenly that their life is short.
C.
Many people are sensible only for a short period of time.
D.
Many people would like very much to prolong their life.