Four Physiological Events That Occur During De-Etiolation (Greening) of Plants

Multiple Choice

Four physiological events that occur during de-etiolation (greening) of plants are listed below.
I. detection of light signal
II. activation of phytochrome
III. activation of specific protein kinase1
IV. formation of de-etiolation response protein
Which of the following lists these events in the correct order?

A) I, III, II, and IV
B) I, II, III, and IV
C) IV, III, II and I
D) II, I, IV and III