Five years ago, Diane secured a bank loan of $310,000 to help finance the purchase of a loft in the San Francisco Bay area. The term of the mortgage was 25 yr, and the interest rate was 6%/year compounded monthly on the unpaid balance. Because the interest rate for a conventional 25-yr home mortgage has now dropped to 4%/year compounded monthly, Diane is thinking of refinancing her property. How much less would Diane's monthly mortgage payment be if she refinances? Please round the answer to the nearest cent. O $509.36 0 $547.65 O $525.78 O $526.83 0 $519.80