a Below is a cash flow projection on a sequential-pay CMO, which has four tranches, A through D. Assume the four tranches get paid in the order of A->B->C->D. In this month tranche A has an outstanding balance of 78,000 and B has an outstanding balance of 40,000. What is the principal payment towards tranche B in this month? beginning month balance scheduled principal payment Prepayment Interest to MBS investors 50 $580,000 21,000 15,000 54,000