In Problem 1, If Demand in the United States Is

In Problem 1, if demand in the United States is given by Q₁ = 11,200 - 800p₁, where p₁ is the price in the United States, and if the demand in England is given by 1,600 - 200p₂, where p₂ is the price in England, then the difference between the price charged in England and the price charged in the United States will be

A) $8.
B) $3.
C) $6.
D) $0.
E) $9.