ibrahim HASHIM on Nearpeer MDCAT Common Room

white matter of spinal cord is made up of mylenated neurons and this mylin sheath give white colour so white matter should have mylenated nerve fibers I am solving an mcqs over NEARPEER PRACTICE BOOK ;I mark option A the mcqs is ; White matter of spinal cord is made up of; A)Mylenated nerve fibers B)tracts C)Non mylenated nerve fibers D)Both A and B But according to ans key correct ans is opt D so should i consider option A or D correct SIR