Consider the following statements and choose the correct answer from the codes- Assertion (A): Natural environment is clean. Reason (R): Human activities are responsible for environmental pollution. Code:

• (a)(A) and (R) both are correct and R is the correct explanation of A.
• (b)(A) and (R) both are correct and R is not the correct explanation of A
• (c)(A) is true but (R) is false
• (d)(A) is false but (R) is true