Steve is the librarian in his city's library. The library provides group disability insurance where premiums are paid by employees with after-tax dollars. He enrolls in a policy through the employer that provides a benefit of $4,200 a month. If he is in the 25% tax bracket and is disabled, what are his benefits after tax?

A) $0.

B) $1,050.

C) $3,150.

D) $4,200.