Shifting the right knee ahead of the left knee in a 90-90 hip shift causes which muscles to contract and what happens to the right inlet?

• A. Left rectus femoris and left sartorius contract; right inlet extends, adducts, and internally rotates.
• B. Right rectus femoris and right sartorius contract; right inlet flexes, abducts, and externally rotates.
• C. Right gluteus maximus and right adductor longus contract; right inlet retracts and rotates medially.
• D. Right biceps femoris and right gracilis contract; right inlet remains neutral.

Answer: (B)