What Is the Best Positioning Adjustment for the Clinician or Patient

What is the best positioning adjustment for the clinician or patient chair to prevent bending the back and craning the neck when working on the lower anterior teeth of a large patient?

A) Position patient so the patient's chin is parallel to the floor.
B) Stand up to perform dentistry with the patient in a supine position.
C) Use a saddle chair to move close to the patient.
D) Wear loupes with a headlight to increase illumination.