The sequence of micro-operations needed to perform the following on AC M[PC] is: . TRM [PC] , then AC + TR O B. AR PC, then DRM [AR] , then AC + DR AR PC, then AC MAR OD IR = M [PC] , then AC - IR Clear my choice The following two transfers are allowed at the same time in the bus system of basic computer: O A. TR DR, DR - TR OB. None of the choices OC. AR PC, PC AR OD. 1R- AC.DR-IR Clear my choice