Refer to Table 3-5. If Canada and Japan trade based on the principle of comparative advantage, what could Japan gain from importing an airplane? O a) b) a maximum of 3 cars Oc) a maximum of 1/3 car O d) a maximum of 4 cars a maximum of 6 cars Canada Japan Labour hours needed to make 1 unit: Cars 30 40 Airplanes 120 160 Amount produced in 24 hours: Cars 54 60 Airplanes 18 15