Which ONE correctly finishes the sentence Proto oncogenes

Last updated: 5/15/2023

Which ONE correctly finishes the sentence Proto oncogenes are O A cancer causing genes that are only in tumor cells and not in normal cells O B normal genes that encode cell cycle control proteins OC oncogenes that are converted to proto oncogenes by mutation O D genes that code for anti cancer proteins such as antibodies O E are limited to malignant metastatic cancer cells