This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pediatrics, environment and nutrition, Subject name: Pathology
Dose of acute radiation causing permanent sterility in males is 
Select and explain. 
A. 0.15Sv, B. 2.5Sv, C. 3.5Sv, D. 5Sv
C: 3.5Sv
Answer: C: 3.5Sv 
Explanation: Estimated Threshold Doses for Acute Radiation Effects on Specific OrgansHealth EffectOrganDose Temporary sterilityTestes0.15Depression of hematopoiesisBone marrow0.5Reversible skin effects (e.g., erythema)Skin1-2Permanent sterilityOvaries2.5-6Temporary hair lossSkin3-5Permanent sterilityTestes3.5CataractLens of eye5Ref: Robbins and Cotran Pathologic Basis of Disease; 9th edition; Chapter 9; Environmental and Nutritional Diseases; Page no: 442; Table 9-7