Assertion (A) : Methane component of greenhouse gases contributing to global warming is about 20 per cent.
Reason (R) : Introduction of multi-point fuel injection engines in automobiles has decreased methane content in the exhausts.
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