Assertion . Mast cells in human body release excessive amount of inflammatory chemicals which cause allergic reactions.
Reason . Allergens in the environment on reaching human body stimulates mast cells in certain individuals

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

A

Explanation

During allergic reaction allergen bind to the receptor present on mast calls that causes release of histamine causes inflammation.