Assertion : Diabetes insipidus iS marked by excessive urination and too much thirst for water .
Reason : Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary gland .
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
