AP EAMCET Medical 2017 Shift 1 Paper

Read the following statements regarding cancer
A) Retinoblastoma protein is a tumor suppressor protein
B) P53 protein allows the cell to enter the apoptosis when DNA damage is irreparable
C) Proto-oncogene mutations are recessive
D) P53 protein plays key role in regulating G2 check point
From the above. Identify the correct statements