Hector a Maria Have Been Married for Almost One Year

Hector a Maria have been married for almost one year now and are thinking about buying a house. Maria is an executive for a large, multi-national corporation with offices around the world. She has been told by her company that she will be transferred to a new location every three years. Hector is a car salesman and he is willing to move to wherever Maria gets transferred. Together they make $8,000 in gross monthly income and pay 40% in taxes and withholdings every month. Between them they have monthly payment of $400 in student loans and $700 in car loans, and their credit cards payments average $450 per month. They currently lease a luxury condo for $1,400 per month. They travel to Cancun every Christmas. Since they both work a lot of hours, they eat out at restaurants for most meals. They currently have nothing in savings but Hector's grandparents have said they will give them a 20% down payment for the new home.
-Based on their incomes,how large of a PITI can they comfortably afford to pay?

A) Based on the 28 percent rule, they can afford $2,240 per month.
B) Based on the 36 percent rule, they can afford $2,880 per month.
C) Based on the 28 percent rule, they can afford $1,344 per month.
D) Based on the 36 percent rule, they can afford $1,728 per month.