The correct option is B White fibrous cartilage
Intervertebral discs are composed of white fibrous cartilage. White fibrocartilage consists of a mixture of white fibrous tissue and cartilaginous tissue in various proportions. It owes its flexibility and toughness to the former of these constituents, and its elasticity to the latter. It is the only type of cartilage, that contains type I collagen in addition to the normal type II.