You Work for a Company That Makes High-Volume Photocopiers for Use

You work for a company that makes high-volume photocopiers for use in business settings. Your team is going to test the usability of the new repair manual for the company's Series 400 photocopier system. You are helping to write the test materials. Which of the following is an effective task to ask a user of the Series 400 repair manual to complete?

A) Find "toner replacement" in the index.
B) Find the instructions for toner replacement.
C) Follow the instructions for toner replacement to replace the toner in this Series 400 copier.
D) Find every chapter that refers to "toner replacement."