These questions consist of two statements each printed as Assertoin and Reason. While answering these questions, you are requied to choose any one of the following four responses.
If both Assertion and Reason are true and Reason is correct explanation of Assertion
If both Assertion and REason are true but Reason is not correct explanation of Assertion
If Assertion is true but Reason is false
If both Assertion and Reason are false
Assertion: In crustose lichen stage, by corroding action, soil formation occurs but his action is very slow
Reason: Crustose lichens produce carbonic acid which corrodes the rock

Options

A. A
B. B
C. C
D. D