Choose the closest paraphrased version after the following sentence or the italicized part.
One's [an old person] thoughts must be directed to the future, and to things about which there is something to be done.（ ）
A.正确答案AOld people must look to the future and think about what else they can do.
B.Old people should concentrate on the present instead of living in the past.
C.Old people are required to adjust to what is going to happen in the future.
D.Old people need to make plans for their future life before it is too late.
