Which of the following is/are true about ADH? (a) It promotes obligatory water reabsorption, (b) it is secreted in response to an increase in extracellular fluid osmolality, (c) it causes insertion of...

Which of the following is/are true about ADH?

(a) It promotes obligatory water reabsorption,

(b) it is secreted in response to an increase in extracellular fluid osmolality,

(c) it causes insertion of aquaporins in the PCT,

(d) it promotes Na⁺
reabsorption.