An air-cooled R-12 refrigeration system is operating normally with a suction pressure of 25 psig and a head pressure of 136 psig. Which of the following represents a possible set of operating pressures if the condenser fan motor burns out?
A. high side 136 psig, low side 25 psig
B. high side 100 psig, low side 15 psig
C. high side 200 psig, low side 20 psig
D. high side 180 psig, low side 35 psig
Answer: D
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