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Assertion : In fishes the oxygented ...

Assertion : In fishes the oxygented and deoxygenated blood are mixed .
Reason : the blood passes through the heart only once .

A

Both assertion and reason are true and reason is correct explanation of assertion .

B

Both assertion and reason are true but reason is not the correct explanation of asseration .

C

Asseration is true but reason is false

D

Both assertion and reason are false

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