Went through MC with my teacher after exam, who is an HSC marker,
MC answers are (but not definitely)
1.A, 2.B, 3.C, 4.C, 5.A, 6.C, 7.A, 8.A, 9.C,10 D, 11.A, 12.B, 13.C, 14.B, 15.B, 16.D, 17.B, 18.D, 19.D, 20.D
20 is D because at the initial tariff price, the economy is in equilibrum and there...