The correct option is D a and b both
Terpenoids, which are derivatives of terpenes, includes abscisic acid and gibberellin (plant growth substances) and the carotenoid and chlorophyll pigments.
Gibberellins (GAs) are plant hormones that regulate growth and influence various developmental processes, including stem elongation, germination, dormancy, flowering, sex expression, enzyme induction, and leaf and fruit senescence.