Scenario 12-13 Joan Grows Pumpkins.If Joan Plants No Seeds on Her Farm,she

Scenario 12-13
Joan grows pumpkins.If Joan plants no seeds on her farm,she gets no harvest.If she plants 1 bag of seeds,she gets 500 pumpkins.If she plants 2 bags,she gets 800 pumpkins.If she plants 3 bags,she gets 900 pumpkins.A bag of seeds costs $100,and seeds are her only cost.
-Refer to Scenario 12-13.Joan's total-cost curve is

A) increasing at an increasing rate.
B) increasing at a decreasing rate.
C) increasing at a constant rate.
D) decreasing.