Which of the following is an example of moving properly for a basic squat?
A. Feet shoulder width apart, heels on the ground, back straight as you lower your body
B. Feet inches apart, heels on the ground, back straight as you lower your body
C. Feet shoulder width apart, heels off the ground as you lower your body with back straight
D. Feet inches apart, heels on the ground as you lower your body with back curled