You are a mortgage broker at Interamerican Bank. One of your customers, Bill Cramer, has submitted an application for a mortgage with a monthly PITI of $1,259. His other financial obligations total $654.50 per month. Bill earns a gross income of $4,890 per month. a. What is his housing expense ratio? b. What is his total obligations ratio? c. According to the lending ratio guidelines (given in this secion of your text), for what tvoe of mortgage would Bill qualify, if any