A newly issued mortgage pass-through security {MPT} consists of the following six loans: A $950,000 loan for 25 years at 4.5% APR A $750,000 loan for 30 years at 5.3% APR A $650,000 loan for 25 years at 6.5% APR A $600,000 loan for 20 years at 6% APR A $550,000 loan for 10 years at 5.5% APR A $500,000 loan for 15 years at 5% APR This pool of mortgages is held in trust by a trustee who extracts a fee of 1.2% of the cash ow. (a) If an investor decides to purchase this WT, what precisely are they purchasing? {3 points: (b) How many years will it take for this security to mature? {3 points} {It} 1What is the coupon rate for this security? {3 points}