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[A] : In mitosis , most of the ordered s...

[A] : In mitosis , most of the ordered sequence of phases occur during I phase .
[R] : Synthesis of mRNA , tRNA and ribosomal RNA occurs is `G_(1)` and replication of DNA of S phase .

A

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

B

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

C

If A is true and R is false

D

If both A and R are false

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