Consider the following assertion and reason and select the correct answer:
Assertion (A) Ozone kills microorganism in water.
Reason (R) Ozone is not radioactive.

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true, but R is not the correct explanation of A

C. A is true, but R is false

D. A is false, but R is true

Answer: Option B