What would happen if the secondary messenger cGMP was blocked in the de-etiolation pathway?

A)Specific protein kinase 1 would be activated, and greening would occur.
B)Ca²⁺ channels would not open, and no greening would occur.
C)Ca²⁺ channels could open, and specific protein kinase 2 could still be produced.
D)No transcription of genes that function in de-etiolation would occur.
E)Transcription of de-etiolation genes in the nucleus would not be affected.