Suppose the Figure Shown Represents the Production Possibilities Frontier for Country

Suppose the figure shown represents the production possibilities frontier for Country A. Country B offers to give 3 TVs to Country A for every cellphone it receives. Assuming Country A fully specializes in cellphone production, which of the following combinations of goods could Country A now consume that it could not achieve before trade?

A) (300 cellphones, 1,000 TVs)
B) (800 cellphones, 1,600 TVs)
C) (600 cellphones, 800 TVs)
D) (400 cellphones, 1,200 TVs)