(1) (2) (3) (4) (5)
Q Q Price Qₛ Qₛ
50 40 10 70 80
60 50 9 60 70
80 60 8 50 60
90 70 7 40 50
100 80 6 30 40

Refer to the table. in relation to column (3), a change from column (4) to column (5) would most likely be caused by:
a). Government placing an excise tax on the good
b). An increase in input prices
c). An increase in consumer income
d). An improvement in production technology