1. True or false. In using the CJNE instruction, we must use the accumulator as the destination. 2. Is the following a valid instruction? "CJNE R4,#67,HERE" 3. Does the 8051 have a "CJE" instruction? 4. Indicate the status of CY after CJNE is executed in each of the following cases (a) MOV A, #25H CJNE (c) MOV A, #34 A,#44H,OVER CJNE (e) MOV R5, #54H A, #34, NEXT CJNE R5,#OFFH,NEXT