Choose the closest paraphrased version after the following sentence or the italicized part.
"We are slaves to nothing but the clock," it has been said.（ ）
A.正确答案DWe work so hard not to waste our precious time.
B.We are no longer ourselves with time passing by.
C.We must strictly follow time arrangement in our life.
D.We lose our freedom living under the great pressure of time.
