Match the items given in column I with those in column II and select the correct option.

	Column I  (hormone)		Column II  (stimulus for secretion)
(a)	PTH	(i)	Hyperglycemia
(b)	Glucagon	(ii)	Hypercalcemia
(c)	Insulin	(iii)	Hypoglycemia
(d)	TCT	(iv)	Hypocalcemia

	a	b	c	d
1	ii	iii	i	iv
2	iv	iii	i	ii
3	iii	i	ii	iv
4	iii	iv	i	ii

PTH – Hypocalcemia (when blood calcium levels are low, PTH is secreted. It increases bone resorption and restores blood calcium level)

Glucagon – Hypoglycemia  (when blood glucose levels are low, glucagon is secreted. It increases blood glucose levels by glycogenolysis and gluconeogenesis)

Insulin – Hyperglycemia (when blood glucose levels are high, insulin is secreted. It  decreases the blood glucose levels)

TCT – Hypercalcemia (when blood calcium levels are high, TCT (thyrocalcitonin) is secreted. It decreases blood calcium levels to normal)