5) Write down the instruction or set of instructions for the following a) Logical shift instruction that divides EBX by 4 b) Logical shift instruction that multiplies the contents of EAX by 16. c) Single rotate instruction that exchanges the high and low halves of the DL register. d) Without using CWD instruction, write the set of instructions for sign-extension from AX to EAX. (copy the sign bit into upper 16 bits of EAX)