As the demand for land rises

A) rents rise and more marginal land comes into use.
B) rents fall and more marginal land comes into use.
C) rents rise and more land becomes marginal.
D) rents fall and more land becomes marginal.

When the demand for land rises, rents will also rise as the available land becomes scarcer. As a result, marginal land that was previously not profitable to use may become economically feasible to use as the increased rent justifies investing in the land. Therefore, more marginal land will come into use to satisfy the demand for land.