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1. Assertion (A): When all inputs of a NAND-gate are shorted to get a one input, one output gate, it becomes an inverter.Reason (R): When all inputs of a NAND-gate are at logic 'O' level, the output is at logic 'I' level.
(A): A is false but R is true
(B): A is true but R is false
(C): Both A and R are individually true and R is the correct explanation of A
(D): Both A and R are individually true but R is not the correct explanation of A
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