For Controlling Ankle and Knee Involvement,the Most Appropriate LE Orthosis

For controlling ankle and knee involvement,the most appropriate LE orthosis for patients with ALS is typically

A) a hip-knee-ankle-foot orthosis as patients have both trunk and LE involvement.
B) a knee-ankle-foot orthosis because of the extreme hyperextension that often occurs with LE weakness.
C) an ankle-foot orthosis because it allows some control of both the ankle and the knee,but it is still relatively lightweight.
D) a foot orthosis because excessive pronation often results in significant pain if not addressed.