Pokagon Company Sold Merchandise for Which It Received $355,200, Including

Pokagon Company sold merchandise for which it received $355,200, including sales and excise taxes. All of the firm's sales are subject to a 6% sales tax but only 50% of sales are subject to a 10% excise tax.
Sales before sales taxes and excise taxes were:

A) $300,000
B) $320,000
C) $316,128
D) $316,000