Definition: In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D".
Input: [header] How to do an upward facing hip rotation [title] Lie down on a flat but comfortable surface. [step] Point your knees towards the ceiling and line them up with your feet and hips. [title] Put your arms at your sides. <sep> (A) [step] Lift your pelvis forward as high as you can and then lower your pelvis back down. [substeps] If the space between your spine and your feet is too narrow to completely eliminate the discomfort, raise up your hips instead. (B) [step] You can spread them out if that helps you keep your balance, or let them rest right next to you. [title] Lift your hips off the ground so your body is diagonal from head to knees. (C) [step] Spread your arms as wide as possible for maximum stability. Slowly tuck in your pelvis and lower your legs and hips up towards the ceiling until your back is perpendicular with the floor. (D) [step] Your palms should be facing up and are parallel to the floor. [title] Arch your back slightly upward, until your tailbone connects your spine.
Output:
B