Select the correct option with respect to the following statements
(a) Angiotensin II constricts arterioles in the kidney to reduce blood flow and decreases blood pressure when blood flow to afferent arteriole decreases.
(b) Angiotensin II stimulates adrenal cortex to release aldosterone for more absorption of \(Na ^{+}\) and \(CI ^{-}\)ions in DCT.
(c) Blood osmolarity varies with secretion of aldosterone and ANP.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.