The main advantage in using a three OP-AMP instrumentation

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The main advantage in using a three OP-AMP instrumentation amplifier over a single OP-AMP differential amplifier lies in

1. higher value of CMRR
2. lower noise figure
3. elimination of the need for accurate matching of resistors
4. simplicity of gain adjustment

Correct Option: C

There is no need for accurate matching of resistor’s.