Assertion : Chilling of blood decreases coagulation time.
Cold depresses the actionof coagulation promoting enzymes.

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

Changes in the temperature of the blood, after it is withdrawn from the body, produces a marked affect on its coagulation time.