Assertion (A) : Reduced coenzyme formed in the oxidation of isocitric acid accounts for more ATP production in electron transport than the reduced coenzyme formed in succinic acid oxidation. Reasons (R) : In the reoxidation of mitochondrial NADH, the number of protons translocated from matrix to intermembrane space is less than the protons translocated when $FADH_2$ is oxidized.

Question

The correct one is

(1) Both (A) and (R) are true, but (R) is not the correct explanation of (A).

(2) (A) is true but, (R) is false.

(3) (A) is false but, (R) is true.

(4) Both (A) and (R) are true, and (R) is the correct explanation of (A).