This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
Which is a transcription factor? 
Select and explain. 
A. RAS, B. MYC, C. FOS, D. GRAP
B: MYC
Answer: B: MYC 
Explanation: Transcription factors are proteins involved in the process of conveing, or transcribing, DNA into RNA.Transcription factors include a wide number of proteins, excluding RNA polymerase, that initiate and regulate the transcription of genes.myc codes for a multi functional factor helping in cell cycle progression, apoptosis.