THE_EXPRESSION_OF_A_NAND_GATE_IS_______?$

• A. A.B
• B. A‚Äö√Ñ√∂‚àö√ë‚àö¬•B+AB‚Äö√Ñ√∂‚àö√ë‚àö¬•
• C. (A.B)‚Äö√Ñ√∂‚àö√ë‚àö¬•
• D. (A+B)‚Äö√Ñ√∂‚àö√ë‚àö¬•