NARRBEGIN: Table 13-1 Table 13-1 Measures of Cost for Splashy Cardboard Kayak Factory. -Refer to Table 13-1.The marginal cost of producing the sixth kayak is:

NARRBEGIN: Table 13-1
Table 13-1
Measures of Cost for Splashy Cardboard Kayak Factory.
-Refer to Table 13-1.The marginal cost of producing the sixth kayak is:
A)$15
B)$7
C)$25
D)it can’t be determined from the information given