Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R) :
Assertion (A) : Mangroves are very specialised forest eco-systems of tropical and sub-tropical regions bordering certain sea coasts.
Reason (R) : They stabilise the shoreline and act as bulwark against encroachments by the sea. In the context of the above two statements, which one of the following is correct?
(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 a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true