Assume that the market for paper supplies and the market for toothpicks have the following char acteristics : The Market for Paper Supplies is comprised of: A large number of independent sellers Differentiated products Low barriers to entry/exit The Market for Toothpicks is comprised of: A large number of independent sellers Homogeneous products No barriers to entry/exit The Papyrus Company operates in the market for paper supplies and Wudden Floss operates in the toothpick market. The sales managers for both companies want to know how a change in price will affect the quantity sold. Which of the following choices best completes the following sentence If both firms increase prices, the quantity sold by Papyrus Company will:（）
A. increase, and the quantity sold by Wudden Floss will decrease.
B. decrease, and so will the quantity sold by Wudden Floss.
C. decrease, and Wudden Floss will sell nothing.