Which of the Following Statements About How Fruit Flies Can

Which of the following statements about how fruit flies can develop an eye in the middle of a leg is TRUE?

A) When the Ey gene is expressed in adult leg cells, these cells dedifferentiate and become eye cells.
B) The Ey gene encodes a transcription regulator that is the only transcription regulator used to produce a fruit fly eye.
C) When the Ey gene is introduced into cells that would normally give rise to a leg, the transcription regulators used to control its expression in the leg are different from those that are normally used to control Ey expression in the eye.
D) All the eye cells found in the adult leg are a single cell type and have identical characteristics.