Cork cambium of dicot originates from
a)	Epiblema	b)	Pericycle
c)	Cambium of vascular bundles	d)	Endodermis

(b)

In dicots, as a result of production of enormous amount of secondary tissues, a pressure is exerted on the peripheral tissue, which are sloughed off. From the outer layer of pericycle, the phellogen (cork cambium) is arise, which cuts off phellem (cork) on the outer side and secondary cortex or phelloderm towards the inner side.