This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
The normal cellular counterpas of oncogenes are impoant for the following functions, except: 
Select and explain. 
A. Promotion of cell cycle progression, B. Inhibition of apoptosis, C. Promotion of DNA repair, D. Promotion of nuclear transcription
C: Promotion of DNA repair
Answer: C: Promotion of DNA repair 
Explanation: Oncogenes may function by inactivation of DNA repair genes, but not by promotion of DNA repair. Ref: Robbin's Illustrated Pathology, 7th Edition, Pages 293, 295; Oncogenes By Geoffrey M. Cooper, 1995, Preview.