Which of the Following Is the Correct Sequence of Events

Multiple Choice

Which of the following is the correct sequence of events after a receptor perceives a signal?

A) The receptor is phosphorylated and then changes its shape.This leads to activation of gene transcription and finally to hormone release from the cell.
B) The receptor is phosphorylated and then changes its shape.This leads to hormone release from the cell,which activates gene transcription.
C) The receptor changes its shape and then becomes phosphorylated.This leads to hormone release from the cell,which activates gene transcription.
D) The receptor changes its shape and then becomes phosphorylated.This leads to activation of gene transcription and finally to hormone release from the cell.