Answer:
PV of first option ($68,000 per year) = ($68,000 / 12) x 22.10965 (PV annuity factor, 24 periods, 0.667%) = $5,666.67 x 22.10965 = $125,288.02
PV of second option ($57,000 per year + $13,000) = $13,000 + [($57,000 / 12) x 22.10965 (PV annuity factor, 24 periods, 0.667%)] = $13,000 + ($4,750 x 22.10965) = $118,020.84