Boolean expression for the output of a NAND gate

1. A.
   $Y = A \cdot B$
2. B.
   $Y = A - B$
3. C.
   $Y = A + B$
4. D.
   $Y = \overline{A \cdot B}$

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1. A.
   $Y = \overline{A + B}$
2. B.
   $Y = A \cdot B$
3. C.
   $Y = \overline{A \cdot B}$
4. D.
   $Y = A + B$

Tap an option to check your answer.