QUESTION 4 Continue assuming that the demand function is given by Q d: 2000 P and the supply function is given by Q, =P. The government levies a tax on consumers. They must pay 100 for each unit of the good they purchase. This tax: ' Shifts the demand function downward while has no effect on the supply function. ' Shifts the demand function upward while has no effect on the supply function. " Shifts the supply function to the left while has no effect on the demand function. ' Shifts the supply function to the right while has no effect on the demand function