Suppose A $=$ B$6$ and B $=6$B $($both in hexadecimal$).$ Show the step by step result multiplying A and B$,$ using Booth$$s algorithm. Assume A and B are $8-$bit two$$s complement integers, stored in hexadecimal format.

Part B$.(2$ marks$).$ What is the RISC$-$V instruction that gives the upper $64$ bits of the above multiplication of signed integers? What is the RISC$-$V instruction that gives the lower $64$ bits of the above multiplication? Name one register where you will be placing the result and fill in all $32$ bit positions for this instruction $($write it both in assembly and in machine language$)$