Teacher: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". 
Teacher: Now, understand the problem? Solve this instance: [header] How to do stretching exercises at the computer [title] Depending on your dress for the day and public exposure (slacks work best for this exercise as opposed to a skirt or dress). [title] Bend the right knee and bring the knee to the chest. [title] Hold, grasping with both hands and pull up to the chest holding for five seconds. <sep> (A) [step] Go to the left and do the same thing with the left knee to the chest and hold with both hands for five seconds. [title] Do five of these, alternating each leg so that you have done ten each. (B) [title] At this time, moving forward, move to right to motion the right knee towards another leg joint. [title] Hold for five seconds without pulling back which will direct the leg to go forward, usually a daredevil. (C) [title] Stop once you feel the stretch in your knee muscles. [title] Relax your leg muscles (come fully upright) with a good smile on your face. (D) [step] Feel your heart rise and contract as you bring the knee up. [title] Slowly lower your right knee so that your right hip and your body weight is balanced, then bring both knees up.
Student:
A