Martina and Anton are attempting to qualify for a mortgage with total mortgage financing (mortgage payment + property taxes) of $1486, heating costs of $68 and a car loan payment of $346. What minimum gross monthly income will they need to have in order to qualify if the maximum debt service ratios allowed by the bank are a GDSR of 32% and a TDSR of 40%? Select one: O a $5937.50 O b. $4750.00 O c. $4953.00 O d. $6333.33