An Assertion (A) and a Reason (R) are given below.

Assertion (A): It causes death when inhaled carbon monoxide.

Reason (R): Carbon monoxide is added to hemoglobin.

choose the right option.

A. A is correct but R is false.

B. A is false but R is correct.

C. Both A and R are correct and R is the proper interpretation of A.

D. Both A and R are correct but R is not a proper interpretation of A.