Answer: Option 'B' is correct.
Step-by-step explanation:
Since we have given that
In case of Alpha:
Number of oranges = 18
Number of apples = 9
In case of Beta :
Number of oranges = 16
Number of apples = 4
We need to find the opportunity cost of producing 1 orange for Alpha and Beta.
Opportunity cost for Alpha is given by
[tex]\dfrac{\text{number of sacrificing units}}{\text{Number of gaining units}}\\\\=\dfrac{18}{9}=2[/tex]
Opportunity cost for Beta is given by
[tex]\dfrac{16}{4}=4[/tex]
Hence, Opportunity cost for producing 1 orange for Alpha and Beta are 9 apples and 4 apples respectively.
Hence, Option 'B' is correct.