(Figure: PPF of Econia (A Small Nation)) Looking at the Production

(Figure: PPF of Econia (a small nation) ) Looking at the production possibilities frontier (PPF) of Econia, what is the opportunity cost of moving production from point B (350 tons of wheat and 400 bales of cotton) to point G (190 tons of wheat and 700 bales of cotton) ?

A) .53 ton of wheat per bale of cotton.
B) 1.875 tons of wheat per bale of cotton.
C) 300 tons of wheat per 160 bales of cotton.
D) 700 bales of cotton per 400 tons of wheat.