Scenario: with Her Available Resources, Wendy Can Produce 20 Greeting

Multiple Choice

Scenario: With her available resources, Wendy can produce 20 greeting cards or 10 earrings. Sarah, with the resources she has, can produce 5 greeting cards or 15 earrings.
-Refer to the scenario above.What is Sarah's opportunity cost of producing 1 earring?

A) 0.33 greeting cards
B) 1 greeting card
C) 1.45 greeting cards
D) 3 greeting cards