E7G04

What is meant by the term “op-amp input offset voltage”?

1. AThe output voltage of the op-amp minus its input voltage
2. BThe difference between the output voltage of the op-amp and the input voltage required in the immediately following stage
3. CThe differential input voltage needed to bring the open loop output voltage to zero
4. DThe potential between the amplifier input terminals of the op-amp in an open loop condition

Pick an answer to check it.