Alpha Can Produce Either 18 Tons of Oranges or 9

Alpha can produce either 18 tons of oranges or 9 tons of apples in a year, while Omega can produce either 16 tons of oranges or 4 tons of apples. The opportunity costs of producing 1 ton of apples in Alpha and Omega are _____, respectively.

A) 0.25 tons of oranges and 0.5 tons of oranges
B) 9 tons of oranges and 3 tons of oranges
C) 2 tons of oranges and 4 tons of oranges
D) 4 tons of oranges and 2 tons of oranges
E) 10 tons of oranges and 20 tons of oranges