What is the main purpose of these checkpoints?

Responses
A To ensure that all cells are spending the correct amount of time in each phaseTo ensure that all cells are spending the correct amount of time in each phase
B To prevent damaged cells from synthesizing DNA and dividing with errorsTo prevent damaged cells from synthesizing DNA and dividing with errors
C To expedite the phases in the cell cycleTo expedite the phases in the cell cycle
D To destroy all cells that are damaged or have DNA errors

B To prevent damaged cells from synthesizing DNA and dividing with errors