A normal bleeding time in association with normal platelet count, and increased prothrombin time (pt) and inr, is indicative of Vitamin K deficiency.
INR is the abbreviation for International Normalized Ratio and PT is the abbreviated form of Prothrombin Time. PT measures the time taken in clotting of blood. INR is the standardized calculation based upon the results of PT.
Prothrombin is the protein known as clotting factor II and is required in fibrin production. Increased PT and INR is the sensitive test for early and mild Vitamin K deficiency. However, increased PT is more sensitive test for the same. Green leafy vegetables, soy products are some of the few eatables high in Vitamin K. Other deficiency disease related to Vitamin K is osteoporosis.
The reason for the answer being choice D is because the pituitary gland is a small pea-sized body attached to the base of the brain. The pituitary gland is important in controlling growth and development and the functioning of the other endocrine glands.