Assertion: PCT, DCT and collecting duct helps in the maintenance of pH and ionic balance of blood by the selective secretion of `H^(+)` and `K^(+)` ions.
Reason: PCT and DCT, both are capable of reabsorbing `HCO_(3)^(-)`ion
A. if both assertion and reason are true and the reason is correct explanation of the assertion
B. if both assertion and reason are true but reason is not a correct explantion of the assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false.
