Answer:
The answer is: C) it is in the interest of Beta to grow oranges and trade for apples.
Explanation:
Since an apple trades for 2 oranges, we can assign them the following value:
If Beta wants to maximize its sales then it can produce 16 oranges which it can trade for 8 apples. Then they can sell the apples for a total of $16.
Instead if they focus only on producing 4 apples per hour, their total sale would be $8.
For Alpha this equation is irrelevant since whatever product they produce their total sales would be $16.