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".

[header] How to stop a horse that tries to buck [title] Breathe deeply and speak quietly to your horse. [step] Though you may find it difficult to take a breathe and be calm when your horse tries to buck, panicking will shut down your ability to process and react properly. Try to take a deep breathe and speak quietly to your horse by saying " whoa " or " calm ". <sep> (A) This will calm him down and greatly reduce your panicking. [substeps] Hold the reigns in one hand and move the other rein to the side so your horse can see you, while he bucks his horse. (B) [substeps] You should also focus on keeping your legs long on your horse and your heels down when you are in the saddle. Sit deep in your pockets and keep your lower back soft. (C) It may help to calm your horse before wearing it out. [substeps] During the entire ride, stand near your horse and be patient as it may tire or experience injury. (D) [substeps] If your horse is bucking to show fear or to calm him or her, sit a little closer to the horse. Try to signal to your horse to stop after the bucking occurs.
B