If a Cell Stops at the G₁ Checkpoint, This Is

Multiple Choice

If a cell stops at the G₁ checkpoint, this is most likely due to what problem?

A) There is DNA damage.
B) The DNA has not finished replicating.
C) The chromosomes are not aligned properly.
D) The cell is cancerous.
E) There is no problem. The cell normally stops at the G₁ checkpoint.