The general rule for rating refrigeration systems (excepting for C02 system) is to approximate following h.p. per ton of refrigeration__________________?

• A. 0.1 to 0.5 h.p. per ton of refrigeration
• B. 0.5 to 0.8 h.p. per ton of refrigeration
• C. 1 to 2 h.p. per ton of refrigeration
• D. 2 to 5 h.p. per ton of refrigeration
• E. 5 to 10 h.p. per ton refrigeration