In a Drying Soil, What Would Be the Result If

In a drying soil, what would be the result if a plant had a mutation that reduces the production of abscisic acid in the root cap?

A) longer roots due to an increase in cell wall extensibility caused by a change in auxin levels
B) increased branching due to an increase in ethylene levels in the pericycle
C) shorter roots due to a change in cellulose microtubule orientation caused by an increase in ethylene levels
D) decreased branching due to the suppression of meristem formation caused by change in auxin levels