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: Radiology
Which layer of epithelium of oral mucous membrane is more sensitive to radiation: 
Select and explain. 
A. Stratum spinosum, B. Stratum granulosam, C. Stratum basale, D. Stratum corneum
C: Stratum basale
Answer: C: Stratum basale 
Explanation: None