A.
granola bars will increase, that is, the demand curve will shift rightward.格兰诺拉麦拉酒吧将增加,即需求曲线将向右移。
B.
cupcakes will increase, that is, the demand curve will shift rightward.纸杯蛋糕将会增加,即需求曲线将向右移动。
C.
granola bars will decrease, that is, the demand curve will shift leftward.格兰诺拉麦拉酒吧将减少,即需求曲线将向左移动。
D.
cupcakes will decrease, that is, the demand curve will shift leftward.纸杯蛋糕将减少,即需求曲线将向左移动。