Consider the following statements:1. A multiplexer is analogous to a rotary switch.2. A decoder is a combinational logic circuit that converts binary information from 'n' input lines to a maximum of 2n distinct elements at the output.3. The Boolean expression for the output difference 'D' from a null subtractor is exactly the same as the output sum 'S' from a full adder.Which of the above statements is/are correct?

Consider the following statements:1. A multiplexer is analogous to a r

1.	Consider the following statements:1. A multiplexer is analogous to a rotary switch.2. A decoder is a combinational logic circuit that converts binary information from 'n' input lines to a maximum of 2n distinct elements at the output.3. The Boolean expression for the output difference 'D' from a null subtractor is exactly the same as the output sum 'S' from a full adder.Which of the above statements is/are correct?
A.	2 and 4 only
B.	4 only
C.	1 and 3 only
D.	1, 2 and 3
Answer» B. 4 only