The value of the Financing loan is PV=$190,800.
The Rate per month is 5.815%. Therefore, the Monthly Interest Rate,r = 0.4846%
We will use the formula:

Where n=number of months in 15 years=12x15=180
and PMT=Payment every month, which is to be found.
Thus,

Thus

Thus, in 180 months Cheney pays:
dollars.
Thus Total Interest paid = $286,391 - $190,800= $95,590
Thus Option A is the closest correct option.