Some Sales Managers Are Talking Shop

Some sales managers are talking shop.Which one of the following quotations refers to a rightward shift of the demand curve?

A) "Since our competitors raised their prices, our sales have doubled."
B) "It has been an unusually harsh winter;our sales of wool scarves are up from last year."
C) "We decided to cut our prices, and the increase in our sales has been remarkable."
D) "The Green movement has sparked an increase in our sales of biodegradable products."
E) All of the above except C.