All of the following statements about agriculture in market economic systems are true except
a. that it is characterized by specialization, profit, and interdependence.
b. in response to low crop prices and overproduction, it is being replaced by intensive subsistence farming.
c. the crop or livestock mix selected by commercial farmers reflects assessment of production and marketing costs and market demands and prices.
d. it involves intensive land use near markets and extensive land use at more distant locations.