Detailed Instructions: 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". 
Problem:[header] How to get a horse fit [title] Consult a veterinarian if the horse was injured. [step] If the horse is recovering from an injury, always consult a veterinarian before coming up with an exercise plan. The horse will likely need a period of stall rest, and may not be able to handle anything more strenuous than a gentle walk on a lead line for some time after that. <sep> (A) In particular, it is highly recommended that you abstain from physical activity while the horse is recovering; this will help the horse maintain muscular health even after recovery. [title] Decide how well you want your horse. (B) Always consult a vet if : [substeps] The horse is not working at all. The horse does not have a lot of endurance and its most recent injuries were relatively minor. (C) [title] Decide whether to lunge or ride. [step] , or handling the horse from the ground with a long line, is a great way to start exercising an out-of-shape horse lightly. (D) [title] Be extra gentle with a horse that has a lot of weight to support. [step] Use caution if your horse is in a large corral, as this will require a lot of force.
Solution:
C