Glycogen synthetase kinase 3 beta is a protein kinase that has been implicated in many types of cancer. Depending on the cell type, the gene for glycogen synthetase kinase 3 beta (GSK3β) can act either as an oncogene or as a tumor suppressor. Which of the following best predicts how GSK3β mutations can lead to the development of cancer?

Cells with inactive GSK3β fail to trigger apoptosis.
A

Cells with inactive GSK3β fail to proceed past the G2/M checkpoint.
B

Cells with overactive GSK3β are more likely to repair DNA damage.
C

Cells with overactive GSK3β have longer cell cycles
D