4. For the following function: h=W.X Y Z + w x y z+w x y z+ w x y Z+w x y z+W x y z+ w x y z+ w x y z a) Draw the truth table for the function h. b) Show the Karnaugh-map for h. c) Give the simplified equation for h, derived from the K-map. d) Draw the circuit schematic for the simplified circuit, using Logisim