This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
Which of the following is used as control in plasma sterilization: 
Select and explain. 
A. B. Subtilis, B. B. Stearothermophilus, C. Cl. Tetani, D. Cl. Perfringens
B: B. Stearothermophilus
Answer: B: B. Stearothermophilus 
Explanation: Ans. B. B stearothermophilusBiological Monitors:Steam: Geobacillus stearothermophilusDry heat: B. atrophaeus (formerly B. subtilis)ETO: B. atrophaeus, (formerly B. subtilis)Ionizing radiation: bacillus pumilisNew low temperature sterilization technologiesPlasma sterilization: Bacillus, stearothermophilusPeracetic acid: G. Stearothermophilus