Localized swelling on a horse’s leg is not an uncommon occur…

Localized swelling on a horse’s leg is not an uncommon occurrence.  After finding your riding horse with a mildly swollen left front knee a few hours after exercise, and determining that there is no external puncture or laceration, which of the following would be a treatment option you could try for maybe 24 hrs prior to calling a vet if the horse wasn’t lame?  Select all that apply.