Hook up the following schematic correctly to compute either ADD or Subtract, A$+$B or A$$B$.$ The inputs are$$A$31-0,$B$31-0,$ and the single input signal$$Subtract$($ADD $=$ not Subtract$).$ Assuming that the time delay through muxes and inverters is $0,$ and the delay through$$one bit of a full adder is $1$ time units, how long $($how many units$)$ will it take to compute the result A $$ B$?$If we follow the illustrated strategy as many times as possible, what will be the final time to compute the result?