Scenario 13-6 Farmer Jack Is a Watermelon Farmer. If Jack Plants No

Scenario 13-6
Farmer Jack is a watermelon farmer. If Jack plants no seeds on his farm, he gets no harvest. If he plants 1 bag of seeds, he gets 30 watermelons. If he plants 2 bags of seeds, he gets 50 watermelons. If he plants 3 bags of seeds he gets 60 watermelons. A bag of seeds costs $100, and the costs of seeds are his only costs.
-Refer to Scenario 13-6.Jack's production function will

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