Help please

Given the information provided in Exhibit 2, which of the following statements is (are) correct? x A reduction in unemployment would allow this economy to produce 750 cars and 80 tanks. y A choice to produce 720 cars and 75 tanks would reflect an inefficient amount of production. z If capital is idle and unemployment of labor exists then this economy would produce less than 360 cars if it was producing 100 tanks. Exhibit 2 Production Possibilities Tanks Cars 110 O 360 720 8 8 8 0 1,080 1,440 Select one: a. x, y, and z X O b. x and y, only O c. x and z, only O d. y and z, only O e. z only