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

Sometimes I think how grateful I would be today if I had learned more back then about what really matters.（ ）

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

Sometimes I think how grateful I would be today if I had learned more back then about what really matters.（ ）

A.

I would be happy now if I had learned more about great historic events.

B.

I would be satisfied today if I had learned more about things really important. 

C.

Since I have learned how to deal with difficulties, I feel content with my education.

D.

Since I have learned more than other students, I feel thankful to my school teachers.

正确答案是B