968. The optimal time and temperature required for sterilization in an autoclave is___________________? September 27, 2025 by Admin A. 140°C x 2 hrs. x 10 lbs pr. B. 121°F x 15 mts. x 15 lbs pr. C. 121°F x 15 se x 15 lbs pr. D. 121°C 15 mts. x 15 lbs pr. ✅ The correct answer is option 121°C 15 mts. x 15 lbs pr..