economics question?

[Bob]

The deadweight loss from an excise tax comes about because:
A. total consumer surplus is at a maximum because some mutually beneficial transactions are eliminated

B. total consumer plus producer surplus is reduced since some mutually beneficial transactions are eliminated.

C. total producer surplus is at a maximum because some mutually beneficial transactions are eliminated.

D. total consumer plus producer surplus is at a maximum because consumers pay a higher price than previously, and producers accept a lower price than previously.