Assume that the contents of the memory location at address DS:0400 is 34 12 CD EF, and the contents of registers before the execution of the instructions are given as follows. Show the contents of the register(s) after the execution of each instruction. Contents of Registers Assembly Instruction Before execution After execution ADD AX, [0400h] ADD AX, 0400h SUB AX, CX AX: BOBO ??. BOBO AX: BOBO AX:_ AX: AX: CX: 0400 ??: SUB AX, [CX] AX: BOB0 AX: CX: 0400 CX