The correct answer is B. NAND.
An AND gate is a logic gate that produces a high output only if all of its inputs are high. An inverter is a logic gate that inverts its
input, producing a high output if its input is low and a low output if its input is high.When an inverter is added to the output of an AND gate, the resulting circuit is called a NAND gate. A NAND gate produces a high output only if all of its inputs are low.
Here is
a truth table that shows the output of a NAND gate for all possible combinations of inputs:Input | Output
——- | ——–
0 0 | 1
0 1 | 1
1 0 | 1
1 1 | 0
As you can see, the NAND gate produces a high output only if all of its inputs are low. This is the opposite of the AND gate, which produces a high output only if all of its inputs are high.
NAND gates are one of the most versatile logic gates and are used in a wide variety of digital circuits.