7. Construct a 2048-to-1 line multiplexer using several input multiplexers; 128-to-1 each, and one interfacing output multiplexer. 1- The number of needed input multiplexers is, a- 4 b- c 16 d- 32 e 64 f- None of the above I = The size of the interfacing output multiplexer is: a- 4-to-1 b-8-to-1 f None of the above ii- c- 16-to-1 d- 32-to-1 64-to-1- e- ii- The follo ents block diagrams ofall needed multiplexers Label the input multiplexer lowest and highest selection switches, lowest and highest inputs and outputs So -1 Lo Output MUX) -1