Three alternatives: D, E and F, are under consideration for a new service truck. Monthly costs associated with the alternatives are listed below: Maintenance costs Fuel costs Alternative D Alternative E Alternative F $2,200 $2.200 $1,500 $1,500 Are the maintenance costs and fuel costs relevant in the choice between alternatives D, E and F? Only maintenance costs are revelant Both maintenance costs and fuel costs are relevant oc Only fuel costs are relevant Neither maintenance costs nor fuel costs are relevant