All of the Following Are True of the R Point

Multiple Choice

All of the following are true of the R point EXCEPT

A) It occurs at the G₂/M transition.
B) The cell's fate at this point may be influenced by growth factors in the cell's surroundings.
C) Deregulation of signaling controlling the R point is common in cancer cells.
D) It is followed by the activation of cyclin E/CDK2 complexes.
E) Passage through this point is regulated by phosphorylation of pRb.