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: Surgery
Whitehead's varnish in gauze is used to arrest bleeding from 
Select and explain. 
A. Gingival crest, B. Bleeding from pulp, C. Bleeding from bone, D. Bleeding from capillaries
C: Bleeding from bone
Answer: C: Bleeding from bone 
Explanation: None