Which of the Following Statements About the Ey Transcriptional Regulator

Which of the following statements about the Ey transcriptional regulator is FALSE?

A) Expression of Ey in cells that normally form legs in the fly will lead to the formation of an eye in the middle of the legs.
B) The Ey transcription factor must bind to the promoter of every eye-specific gene in the fly.
C) Positive feedback loops ensure that Ey expression remains switched on in the developing eye.
D) A homolog of Ey is found in vertebrates; this homolog is also used during eye development.