Read the following sentences with the idiom “hand in glove with”, which idiom is derogatory (贬义的)?
A.
The two friends are hand in glove with each other.
B.
The traitors and the enemy were working hand in glove with each other.
C.
It has world-class universities that work hand in glove with business.
D.
The local police are working hand in glove with FBI to find the bank robbers.