Consider a 20 -year, $180,000 mortgage with a rate of 6.3 percent. Four years into the mortgage, rates have fallen to 5 percent. Suppose the transaction cost of obtaining a new mortgage is $1,900. a. Should the homeowner refinance at the lower rate? Yes No b. Quantify the effect of the homeowner's decision. Note: Do not round intermediate calculations. Round your answer to 2 decimal places. Answer is complete but not entirely correct