The Image Below Is a Cross Section Through a Young

Multiple Choice

The image below is a cross section through a young root tip with a layer of root cap cells surrounding the developing epidermis and interior tissues. The darker epidermal cells are stained to express the homeotic gene GLABRA-2. Which of the following best predicts what will be the appearance of this part of the mature root?

A) The epidermis will lack root hairs.
B) Only the stained epidermal cells will develop root hairs.
C) Only the unstained cells will develop root hairs.
D) Every epidermal cell will develop a root hair.