d) Say you have a 3-bit unsigned number X[2:0] (so X2 is the most significant bit, X1 is the next most significant, and XO is the least significant). Using only standard gates (AND, OR, NOT), and constant Os and 1s, multiply X[2:0] by two and output it as a 5-bit 2's complement number Y[4:0). Use as few gates as possible. (Hint: you can use very few gates indeed.) [6]