An instruction at address 050 in the basic computer has I-0, an operation code of the AND instruction, and an address part equal to OAB (all numbers are in hexadecimal). The memory word at address OAB contains the operand FFFF and the content of AC is BA73. Go over the instruction cycle and determine the contents of the following registers at the end of the execute phase: PC, AR, DR, AC, and IR. Repeat the problem six more times starting with an operation code of another memory reference instruction. IR Instruction Initial AND ADD LDA STA BUN BSA ISZ PC AR DR AC