The Johnsons are buying a house that costs $210,000 and can afford a 20% down payment. If the Johnsons want the lowest monthly payment, which loan option would you recommend? a. 30 year FHA, 3. 5% down at a fixed rate of 6. 25% b. 30 year fixed, 20% down at a fixed rate of 6% c. 30 year fixed, 10% down at a fixed rate of 6% d. 15 year fixed, 20% down at a fixed rate 5. 5%.