How should the reformer be configured for safe knee-stretch series in terms of carriage position, springs, and foot placement?

• A. Position the carriage so there is control without over-lengthening, use light to moderate springs, keep feet parallel and hip-width apart on the footbar with knees tracking over toes, and maintain a neutral spine and ribcage connection.
• B. Position the carriage fully out, heavy springs, feet parallel hip-width apart with knees tracking over toes.
• C. Carriage mid-position, no springs, feet together.
• D. Carriage locked, maximum resistance, heels elevated.

Answer: (A)