DELLA proteins are known to interact with phytochrome interacting factors (PIFS) and regulate genes involved in etiolation in Arabidopsis. Following are certain statements regarding the function of DELLAS under dark and light conditions:
A. In dark, high level of gibberellic acid (GA) helps DELLAS to directly bind to PIFs.
B. During light, the level of GA goes down and helps DELLA-PIF complex to bind to the promoters of the etiolation responsive genes.
C. Binding of DELLA proteins to PIFs prevents the transcription of PIF- induced genes, leading to photomorphogenesis.
D. Skotomorphogenesis is due to the degradation of DELLA proteins and binding of the PIFS to the etiolation responsive genes.
Which one of the following options represents the combination of all correct statements?