4. A digital combinational circuit takes 4 inputs A1, AO, B1, and BO and generate three outputs L, E, and G as following two bit comparison. Design and draw this combinational circuit. [40pts] a. b c. L = (A1, A0) (A1, A0)--(B1, BO) G-A1, A0) > (B1, BO) Do not optimize across L, E, and G. For example E = (L + Gr-you do not need to optimize at this level. Use what isolated K-maps for L, E, and G gives you Use multi-input combinational gates as much as possible in logic circuit drawing. For example you should use 4-input AND gates in logic schematic drawing which will save you a lot of effort instead of using 3 2-input AND in cascade. ]