Directions: In the following questions, a statement of assertion is followed by a statement of reason.
Mark the correct choice as:
(1) Both Assertion (A) and Reason (R) are True and the Reason \( (R) \) is a correct explanation of the Assertion (A).
(2) Both Assertion (A) and Reason (R) are True but Reason \( (R) \) is not a correct explanation of the Assertion (A).
(3) Assertion (A) is True but the Reason (R) is False.
(4) Assertion (A) is False but the Reason (R) is True.
Assertion (A): Carbon dioxide is carried in the plasma mainly as \( \mathrm{HCO}_{3}^{-} \)ions.
Reason (R): Enzyme carbonic anhydrase of RBC, catalyse the formation of \( \mathrm{HCO}_{3}^{-} \)ions that enter plasma.
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