When Dividing Cells Are Progressing Through the Cell Cycle, Many

When dividing cells are progressing through the cell cycle, many checks are imposed to ensure that the process is occuring with fidelity. A critical checkpoint in the cell cycle occurs in response to DNA damage, such as that induced by UV light. Which of the following cell-cycle proteins is involved in DNA damage-mediated cell-cycle arrest?

A) CDK2
B) cyclin A
C) cyclin D
D) E2F
E) p53