This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to rehab your knee after acl surgery
Use a knee brace to stabilize your knee following surgery.
In the hours following surgery, a knee brace will be place around your knee to support and stabilize it. This knee brace should be worn over the next 4 to 6 weeks, while your knee is at rest (i.e. it shouldn't be worn while you are performing rehabilitation exercises).

Choose your answer from: A. The brace should be made of linen or leather. Doctors recommend keeping the brace on for at least 4 weeks after surgery to maintain optimal healing.; B. Follow the directions your doctor gives you to use a knee brace, including bathroom directions. Discuss the wear and tear of the knee brace with your family and friends.; C. Massage and rearrange your knee during recovery to give it more structure and support. Massage and rearrange your knee should be done as needed throughout recovery and avoid pain.; D. Make sure the brace is worn around the kneecap and that it is secured tightly. Keep your knee elevated to avoid swelling.;
The answer is:
D.