Answer:
Present value of Building A = $612,000
Present value of Building B = $71,490 + $71,490*Present value of Annuity for n=25,i=11% = $71,490 + $602,070.53 = $673,560.53
Present value of Building C = $655,200 - $6,850*Present value of Annuity for n=26,i=11% = $655,200 - $58,143.20 = $597,056.80
Net Present Value
Building A $612,000
Building B $673,560.53
Building C $597,056.80
Conclusion: The Sherdian Inc. should locate itself in Building C as it has least Net Present Value