A transportation firm plans to purchase a fleet of vehicles. It is considering several alternatives by fuel type used. The firm's engineer calculated total equivalent annual cost (EAC) of each of the fuel alternatives at 10% MARR. They are as follows:

Electric Power: EAC(10%) = 6.3 + 5.1M

Leaded Petrol: EAC(10%) = 5.1 + 18.2M

Unleaded Petrol: EAC(10%) = 4.9 + 20.3M

Diesel: EAC(10%) = 5.3 + 15.1M

Liquefied Natural Gas: EAC(10%) = 4.6 + 22.4M

***Where M is the number of shifts.