The Market for Sweet Potatoes Consists of 1,000 Identical Firms $S T C = 100 + 100 q + 100 q ^ { 2 }$

Multiple Choice

The market for sweet potatoes consists of 1,000 identical firms. Each firm has a short-run total cost curve of $S T C = 100 + 100 q + 100 q ^ { 2 }$ , and a short-run marginal cost curve of $S M C = 100 +$ $200 q$ where $q$ is output. What is the equation of an individual firm's short-run supply curve in this market?

A) $q = P / 200 ^ { - .5 }$
B) $q = P / 100 - .5$
C) $P = 100 + 200 q$
D) $q = P / 200 - .5$ for $P \geq 100$ , and $q = 0$ otherwise.