Choose the closest paraphrased version after the following sentence or the italicized part.
Once the sands have run out of a person’s hourglass, they cannot be replaced.（ ）
A.正确答案BIf a person’s clock goes wrong, nobody can repair it.
B.Once an hour is gone, it will never come back to us.
C.Time is as precious as sands in an hourglass.
D.Sands can easily run out of an hourglass.
