Create a circuit project Lab$1.$circ in the Logisim.

Add a circuit testing D$-$Flip$-$Flop

Add a circuit testing a $4-1$ Multiplexer

Build a $4-$bit shift register using four D$-$flip$-$flops and four multiplexers $($MUX$-4).$

Make sure that you have selection inputs control over it$.$