Choose the closest paraphrased version after the following sentence or the italicized part.
By word of mouth during the holidays, by phrases in letters during term time, I was kept up to date with John’s cleverness and progress.（ ）
A.正确答案D…I tried my best to improve myself and to be as good as John.
B.…I always remained myself of John’s intelligence and ability.
C.…I was encouraged to catch up with John in school work.
D.…I was kept well informed of John’s achievements.
