A Firm Has $5,300 of Cash, Equipment Worth $49,000, Inventory

A firm has $5,300 of cash, equipment worth $49,000, inventory of $30,000, $8,900 worth of patents, and $15,700 of accounts receivable. What is the value of the total current assets?

A) $21,000
B) $30,000
C) $51,000
D) $59,900
E) $108,900