What is the principal portion of the 188th months payment for a $450,000 15/15 Hybrid ARM Mortgage (first 15 years are fixed rate and second 15 years are adjustable all payments are fully amortizing) with the following parameters: Fixed Interest Rate: 5.5% 1st Year of ARM portion - LIBOR Index: 1.85% 2nd Year of ARM portion - LIBOR Increase: 1.45% Margin: 275 basis points Annual Periodic Cap: 2% Lifetime Cap: 5% a. $786.34 b. $906.79 c. $1165.87 d. $1242.31 None of the above