Which of the following statements is/are true for methane?
Statement-1: Methane causes both photochemical smog & global warming.
Statement-2: Methane is found in paddy fields.
Statement-3: It is a stronger global warming gas than `CO_2`.
Statement-4: Methane is a part of reducing smog.

Options

A. S1,S2,S3
B. S2,S3
C. S1,S2,S4
D. S1,S2