A physical therapist is observing the gait of a patient with right hip osteoarthritis. The patient reports stiffness and minimal pain. After midstance, when the right leg is supposed to move into the push-off phase of gait, the limb stays directly under the body. Some increased lordosis is also noted. Based on the missing range of motion at the right hip demonstrated during this gait pattern, which of the following mobilizations would be MOST appropriate to increase that range?

A. Grade 2 anterior glide
B. Grade 4 anterior glide
C. Grade 2 posterior glide
D. Grade 4 posterior glide