Its weight per ton of the refrigeration is low,

• In aircraft, air refrigeration cycle is used because of low weight performance of refrigeration.
• The refrigerator used namely air is cheaper and easily available
• There is no change of fire or toxic effects due to leakage
• The weight to ton of refrigeration ratio is less as compared to other system
• Aircraft refrigeration uses Bell Coleman/ reversed Brayton cycle.

Hence, the correct option is (C).