For a shoe shine process, the following functions have been identified:

Function	Function Description
A	Clean / Brush Shoes
B	Obtain Polish
C	Open and Apply Polish
D	Buff
E	Inspect
F	Collect Payment

If one was to prepare a function map for the above identified functions and assign them between "Customer" and "Operator" then:

Select the functions that will be the responsibility of the "Customer" (check all that apply):

A.

Instruction for color

B.

Approval of work done

C.

Pay and tip

D.

Buff

E.

Clean shoes