Assertion (A) : The concentration of methane in the atmosphere has more than doubled in the last 250 years.
Reason (R): Wetlands and rice fields are the major sources of methane.

Options

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 statement but (R) is false
D. Both (A) and (R) are false

Answer

B