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[A] : Viruses are obligate parasites . ...

[A] : Viruses are obligate parasites .
[R] : Viruses can not multiply outside the host .

A

1)If both A and R are true and R is the correct explanation of A

B

2)If both A and R are true but R is not the correct explanation of A

C

3)If A is true and R is false

D

4)If both A and R are false

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