NEET Biology question

Assertion (A): Biogas plants are widely used in rural India. Reason (R): Cattle dung, abundant in rural India, is rich in methanogenic bacteria and serves as an excellent raw material for biogas production.

• (A)Both A and R are true and R is the correct explanation of ACorrect
• (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