g a cmo is issued from a 200 mil. pool of mortgages. it has 4 tranches listed below. 12 million in losses are incurred in the pool of mortgages. (assume no principal repayments have occurred.) aaa-rated tranche $140 million a-rated tranche $ 40 million b-rated tranche $ 10 million unrated tranche $ 10 million what is the loss rate on the unrated tranche in percentage points (5% would be entered as 5.00)?