Problem: Brewster Company has an acid-test ratio of 1.5 and a current ratio of 2.5. Current assets equal $200,000, of which $10,000 is prepaid expenses. The company's current assets consist of cash, marketable securities, accounts receivable, prepaid expenses, and inventory. Brewster Company's inventory must be:
A) $30,000
B) $110,000
C) $70,000
D) $80,000