This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Male Genital System, Subject name: Anatomy
Normal volume of adult testis- 
Select and explain. 
A. 5-10ml, B. 10-15ml, C. 15-20 ml, D. 25-30 ml
C: 15-20 ml
Answer: C: 15-20 ml 
Explanation: Ans. is 'c' i.e., 15-20 ml "Normal adult testicular volume is 15-20 ml, calculated by the formula : length x width x depth x 0-52 = volume" - Grainger.