Changes in plasma osmolarity and extracellular fluid (ECF) volume affect thirst by separate pathways as given in the following statements.

A. Hypertonicity leads to osmoreceptor activation giving rise to hypothalamic control of thirst.

B. Hypertonicity leads to baroreceptor activation giving rise to hypothalamic control of thirst.

C. Hypovolemia leads to activation of baroreceptor and angiotensin II giving rise to hypothalamic control of thirst.

D. Hypovolemia leads to osmoreceptor activation giving rise to hypothalamic control of thirst.

Which one of the following options represents combination of all correct statements?