See table: PR Eco-Friends sells bicycles to local retailers. Bikes can be sold assembled or unassembled. The following information is available for each bike: Which bike(s) should be sold? already assembled? Small Median Big 1 Initial sale price $90 $150 $250 1 T 1 570 Initial cost $30 $45 1 Sale price $110 $180 1 $260 assembly 1 cost to assemble $15 $20 $25 a. Small and large. b. Medium and large. c. Small and medium d. Small, medium and large.