How does the growth of grass stop in alpine forests?

How does frog swim ?

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: Alpine forests consist of dward shrubs mainly of juipers, silver firs and Rhododendrotns Reason: Alpine forests occur in HImalayas above the altitude of 3500 metres.