Under which of the following conditions will there be no change in the reading frame of following mRNA? 5’AACAGCGGUGCUAUU3’

1. A. (1) Deletion of GGU from 7th, 8th and 9th positions
2. B. (2) Insertion of G at 5th position
3. C. (3) Deletion of G from 5th position
4. D. (4) Insertion of A and G at 4th and 5th positions respectively

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