Make-or-buy Kane Company is considering outsourcing a key component. A reliable supplier has quoted a price of $64.50 per unit. The following costs of the component when manufactured in-house are expressed on a per unit basis:

Direct materials....... $23.40

Direct labor......... 16.10

Variable overhead..... 26.70

Fixed overhead......... 6.90

Total costs......... $73.10

Required

(a) What assumptions need to be made about the behavior of overhead costs for Kane in order to analyze the outsourcing decision?

(b) Should Kane Company outsource the component?

(c) What other factors are relevant to this decision?