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19 A multiplexer is used to accept data from many input sources for transmission over a common shared line as shown in Figure Ci Figure B19 When A=1, B=1, which of the inputs is present in the output Y. What must be the value for A and B so that Laptop sound card will be selected? [0.5] [0.5] 111) Construct the truth table, write the logic function and draw the logic diagram of the given [4] multiplexer