The correct option is
C Rauwolfia serpentinaRauwolfia serpentina, or Indian snakeroot or sarpagandha, is a species of flowering plant in the family Apocynaceae.
The plant contains more than 50 different alkaloids which belong to the monoterpenoid indole alkaloid family. The major alkaloids are ajmaline, ajmalicine, ajmalimine, deserpidine, indobine, indobinine, reserpine, reserpiline, rescinnamine, rescinnamidine, serpentine, serpentinine and yohimbine.
The plant is known for curing various disorders because of the presence of alkaloids, carbohydrates, flavonoids, glycosides, phlobatannins, phenols, resins, saponins, tannins and terpenes.
Thus, the correct answer is option C.