Shama is producing candles in a perfectly competitive market. when she produces 500 candles, her total cost is $250. if she produces one additional candle, her total cost increases to $260. in order to maximize her profit, she should produce the additional candle

a) if the market price for a candle is $12.

b) only if the market price exceeds $260 for a candle.

c) only if the market price exceeds $250 for a candle.

d) if the market price for a candle exceeds $0.50.

e) if her price exceeds her average total cost.

explain why