Which of the following statements describes cross price elasticity of

demand?

A.

A weaker rupee against the dollar has increased India's export competitiveness.

B.

As a result of a rise in the price of spinach with all else remaining constant, Ralph buys more broccoli, a substitute for spinach.

C.

A quota imposed on the production of potatoes has increased supply of onions.

D.

A 10 percent rise in the price of ink cartridges decreases the quantity demanded of ink cartridges by 6 percent.