What is the best sitting position for lower back pain?

What is the best sitting position for lower back pain? Sit with a back support (such as a rolled-up towel) at the curve of your back. Keep your hips and knees at a right angle. (Use a foot rest or stool if necessary.) Your legs should not be crossed and your feet should be flat on the floor.

Sit with a back support (such as a rolled-up towel) at the curve of your back. Keep your hips and knees at a right angle. (Use a foot rest or stool if necessary.) Your legs should not be crossed and your feet should be flat on the floor.