Given the following information about a CMO - 534 million of mortgage pool principal assigned to the floater class. 511 million assigned to the inverse floater class -Footer class coupon rule: UIBOR +0.2% - trivere floater class coupon rule: 12.5-LXUBOR -LIBOR in the first months What is the WAC coupon rate of the underlying collateral pool Round your answer to three decimal points leg if your answer is 5.1 writt 0.051)