Select the most appropriate idiom ( in the context) to fill in the sentence.
Radha is unable to continue working in this office. Hard work is ______ on her health..

A

making her meet both ends

B

blowing hot and cold

C

It will have been believed by my grandmother that drinking a glass of milk at bedtime is essential for health.

D

It has been believed by my grandmother that drinking a glass of milk at bedtime is essential for health.