Brad is considering buying a new electric bike. He has a choice between a Lectric-XP e-bike and a Giant-FT e-bike. Brad has a MARR of 6%. Lectric-XP: First Cost: $1,500. Life: 5 years, zero salvage value at the end of 5 years. Annual Expense (maintenance, charging, etc.): $190. Giant-FT: First Cost: $2,100. Life: 7 years, zero salvage value at the end of 7 years. Annual Expense (maintenance, charging, etc.): $150. For a 5-year study period, what salvage value for the extra 2 years of life for Giant-FT would result in that both e-bikes are equivalent in Present Worth? $256.36 $459.18 $544.74 $577.45 $669.01