This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacterial infections, Subject name: Dental
The "circle of hebra" represents the main sites of involvement in 
Select and explain. 
A. Blister beettle dermatitis, B. Pediculosis corporis, C. Scabies, D. Toxoplasmosis
C: Scabies
Answer: C: Scabies 
Explanation: Circle of Hebra: Imaginary circle intersecting sites of predilection in Scabies ie; Areolae, axillae, elbow flexures, wrists, finger webs, umbilicus, lower abdomen, genitalia. Ref Harrison 20th edition pg 1244