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Assertion: Mast cells in the human body release excessive amounts of inflammatory chemicals, which cause allergic reactions.

Reason: Allergens in the environment on reaching human body stimulate mast cells in certain individuals.

Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
Assertion is true statement but Reason is false.
Both Assertion and Reason are false statements.
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