Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: A large number of nerve fibers hold together from a nerve. Through these nerves, messages travel from one part of the body to another. Reason R: A nerves cell is made up of all the cell body, which contains the nucleus and a long structure called the axon. In the light of the above statements, choose the correct answer from the options given below: