Assertion: Failure of secretion of hormone vasopressin causes diabetes mellitus in the patient. Reason: Vasopressin increases the volume of urine by increasing the reabsorption of water from the urine.
A. if both assertion and reason are true and the reason is correct explanation of the assertion
B. if both assertion and reason are true but reason is not a correct explantion of the assertion
C. if the assertion is true but reason is false
D. if both the assertion and reason are fasle
