Place the following steps in the proper design process order:

1. Repeat the customer requirements back to them.
2. Create a Bill of Materials.
3. Gather information from the customer.
4. Define the ultimate customer goals.
5. Create a preliminary high-level design document.

A.
3 4 1 5 2

B.
1 2 4 3 5

C.
5 3 4 2 1

D.
1 5 2 4 3