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# Following table is for which logic gate:

$\begin{array}{1 1} (1)\; AND \\ (2)\; OR \\ (3)\; NAND \\ (4)\; NOT \end{array}$

AND gate $\to C = A . B$
OR gate $\to C = A + B$
NOT gate $\to$ (It has only one input)
NAND gate $\to C = \overline{A.B}$
$\therefore$ The answer is NAND gate.