Without Government Subsidization,the Conversion of Farmland in the United Kingdom

Without government subsidization,the conversion of farmland in the United Kingdom from conventional to organic production will generally cause a farmer's

A) marginal cost and average total cost to decrease.
B) marginal cost and average total cost to increase.
C) average total cost to increase and marginal cost to decrease.
D) marginal cost to increase and average total cost to remain unchanged.