In Agriculture During Much of the 20th Century,supply Grew More

In agriculture during much of the 20th century,supply grew more than demand.Which two farm problems are these?

A) the high-productivity problem and the income elasticity problem
B) the low-productivity problem and the income inelasticity problem
C) the high-productivity problem and the income inelasticity problem
D) the low-productivity problem and the income elasticity problem
E) none of the above