Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R). In the light of the above statements, choose the most appropriate answer from the options given below:

The Assertion is not correct because carbon monoxide has essentially no direct greenhouse effect of its own.

It absorbs very little infrared radiation itself and is not counted as a direct greenhouse gas.

The Reason is correct because carbon monoxide is oxidised in the atmosphere to carbon dioxide and also raises methane levels by using up hydroxyl radicals.

By consuming hydroxyl radicals, carbon monoxide slows the natural removal of methane, an indirect warming effect.

This indirect influence, rather than a direct one, is why carbon monoxide matters for the climate.

Carbon monoxide is mainly produced by incomplete combustion of fuels.