Blanca Products makes cedar garden benches in three sizes: small, medium, and large Blanca sells the benches to local retailers. The benches can be sold with or without assembly. The following information is available for each bonch: Initial sales price Initial cost Sales price after assembly Cost of assembly Small $90 30 110 15 Medium $150 45 180 20 Large $250 70 260 25 Number sold per month 120 350 150 Which bench(es) should be assembled before they are sold to retailers? Small and medium Small, medium, and large Small and large Medium and large