A potential Buyer walks up to a consignor at the Keeneland September Sale and asks the consignor if a horse he is looking at has a Curb. The Consignor says no and then tells the potential Buyer he will warrant that there is no curb. The Buyer purchases the horse and then has a vet ultrasound the hock the next day. It turns out that the Horse does have a Curb.

Can the Buyer turn the horse back?

Can the Buyer sue the Consignor for misrepresentation?

Is the oral warranty binding on the Consignor?

Is the oral warranty binding on the Principal of the Consignor $($the actual owner of the Horse$)?$