The HARDY Mutation, Which Biotechnologists Have Recently Integrated into Rice

The HARDY mutation, which biotechnologists have recently integrated into rice plants, has been shown to increase water use efficiency.This genetic modification will help feed an ever-increasing world population by

A) making rice plants more resistant to frost damage.
B) making rice plants less prone to damage from pests.
C) enabling rice plants to be grown in a wider range of environments.
D) making rice plants produce more grain per plant.
E) increasing the vitamin D content of each grain of rice.