Refer to the table above. Relative to column C, it appears that column D represents __.
A.an increase in demand.
B.an increase in quantity supplied.
C.a decrease in quantity demanded.
D.a decrease in supply.
正确答案：a decrease in supply.
Refer to the table above. Relative to column C, it appears that column D represents __.
A.an increase in demand.
B.an increase in quantity supplied.
C.a decrease in quantity demanded.
D.a decrease in supply.
正确答案：a decrease in supply.