The correct option is C Cortex
The apical meristematic tissue is a continuously dividing tissue which mainly helps to form different specialized cells. Periblem is the histogen in plants that gives rise to the cortex. It is the multilayered zone that lies beneath the dermatogen. The periblem cells divide in anticlinal and periclinal planes and give rise to cortex and endodermis. Pleurome gives rise to pericycle, vascular tissues, pith and medullary rays. Dermatogen gives rise to an epidermal layer of plant organs.
Thus, the correct answer is option B.