Which of the Following Scenarios Illustrates the Use of Processed

Which of the following scenarios illustrates the use of processed materials in manufacturing?

A) ​No-Glut Inc. uses rice flour in the manufacture of its gluten-free products. 
B) Zintec Hardware uses nails to hold its ladders together.
C) Pace Corp., an automobile company, uses magnesium alloy wheels for its high-end cars.
D) ​Reldex Steel Corp. uses blast furnaces in its manufacturing process.