Which of the following are functions in the standard Order to Cash process? Note: There are 3 correct answers to this question.

Which of the following are functions in the standard Order to Cash process? Note: There are 3 correct answers to this question.
A . Subcontracting
B . Procurement of materials
C . Availability of the articles purchased
D . Calculation of pricing and taxes
E . Scheduling the delivery of goods

Answer: C,D,E