Suppose a Firm's Short Run Total Cost Curve Can Be $S T C ( Q ) = 50 Q + 10$

Multiple Choice

Suppose a firm's short run total cost curve can be expressed as $S T C ( Q ) = 50 Q + 10$ . This firm's short-run marginal cost can be expressed as:

A) $50 + \frac { 10 } { Q }$ .
B) $50 Q$ .
C) 50 .
D) 10 .