-Which of the Following Would Result in the Changes Shown

-Which of the following would result in the changes shown in Exhibit C-2 on the previous page (where S and D represent the initial supply and demand for Smids) ?

A) Tastes for smids declined and incomes decreased.
B) The cost of producing smids increased and consumer tastes for smids declined.
C) Consumer incomes increased and production technology for smids improved.
D) The population increased and the input costs for smids increased.
E) Production technology improved and the price of Quids, a substitute good, declined.