I believe it is B. Hope this helps!!
I know this answer but it is really commutated
Cells will usually divide if they receive the proper signal at a checkpoint in the G1 phase of the cell cycle. In mammalian cells , this checkpoint is called the restriction point. The G1 phase is a phase of the cell cycle that takes place in eukaryotic cell division. In this phase the cell synthesizes mRNA and proteins in preparation for the subsequent steps leading to mitosis. It ends when the cell moves into the S phase of interphase.
A frameshift mutation<span> (also called a framing error or a reading </span>frame shift<span>) is a genetic </span>mutation caused<span>by indels (insertions or deletions) of a number of nucleotides in a DNA sequence that is not divisible by three.</span>
