Which of the Following Sentences Contains a Euphemism

Which of the following sentences contains a euphemism?

A) I started to take the bus after my car broke, and now I′m dating the driver: every cloud has a silver lining.
B) Idk, why don′t you ask Peter?
C) I worked as a sanitation engineer while I was a student, you get used to the smell very quickly.
D) He left with his tail between his legs after he was told he′s not welcome here.