Scenario 10.5: A Firm Produces Garden Hoses in California and in Ohio

Scenario 10.5:
A firm produces garden hoses in California and in Ohio. The marginal cost of producing garden hoses in the two states and the marginal revenue from producing garden hoses are given in the following table:
California Ohio
Qc MCc Qo MCo Qc + o MR
1 2 1 3 1 24
2 3 2 4 2 20
3 5 3 6 3 16
4 9 4 8 4 12
5 16 5 12 5 8
6 24 6 17 6 4
-Refer to Scenario 10.5. From the perspective of the firm, what is the marginal cost of the 5th garden hose?

A) 4
B) 5
C) 16
D) 12
E) 8