Advantages Derived from the Use of a Circadian Oscillator Regulatory

Advantages derived from the use of a circadian oscillator regulatory mechanism include:

A) less down regulation of proteins needed for photosynthesis during hours of total darkness
B) reduced synthesis of essential photosynthesis proteins on cloudy days
C) reduced synthesis of essential photosynthesis proteins at dawn and dusk
D) prediction of need for photosynthesis-related molecules to maximize photosynthesis during daylight hours