Select the most appropriate indirect form of the given sentence.“Press button A to start the machine,” said the instructor to the trainees.

• A. The instructor told the trainees that pressing button A would start the machine.
• B. The instructor told the trainees to press button A to start the machine.
• C. The instructor said to the trainees that you should press button A to start the machine.
• D. The instructor requested the trainees press button A to start the machine.