This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain , Subject name: Anatomy
Corpus callosum 
Select and explain. 
A. Projection fibers, B. Commissoral fibers, C. Association fibers, D. None
B: Commissoral fibers
Answer: B: Commissoral fibers 
Explanation: Corpus callosum is the largest commissure of brain, interconnecting two identical/ corresponding areas of cerebral hemispheres.Other commissures are:Anterior commissurePosterior commissureHippocampal commissureHabenular commissureNOTE: The primary visual area and hand region of primary somatosensory area of coex have no commissural fibres.(Ref: Vishram Singh textbook of clinical neuroanatomy, second edition, pg- 163)