Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R).
Assertion (A): Addition of organic matter to a mineral soil leads to improvement in water holding capacity of the soil.
Reason (R): Under tropical conditions, water holding properties and available water range of a mineral soil due to addition of organic matter may not change materially.
In light of the above statements, choose the most appropriate answer from the options given below.