Uvis Tractors can produce a part for a tractor for the follo 56 Totalten An outside supplier offers to provide Davis with all the parts kneeds at sa per ut. Owis buy from the polar, com seme will telew..., Dude Buy the part since the relevant cost to make it is 560. O Make the part since the relevant cost to make it is so O Make the part since the relevant cost to make it is 550 Buy the part since the relevant cost to make it is 550