Question

I need help with these two questions:

1. Sheet metal and copper piping are examples of
a. natural resources
b. industrial products
c. consumer products
d. standard materials

I think it's either B or D

2. Which of the following would be considered part of a primary processing system?
a. Drilling the earth for oil
b. Cutting lumber to build a barn
c. Manufacturing a computer chip
d. Servicing a furnace

I know it's not B.

Thanks