Consider the following statements regarding a differential amplifier using an FET pair. The differential output offset voltage is due to:1. Mismatch between FET parameters2. Difference between the values of resistors used in the circuit even though they are marked nominally equal3. Variation in the operating voltage of the circuitWhich of the above statements are correct?

• A. 1, 2 and 3
• B. 2 and 3 only
• C. 1 and 3 only
• D. 1 and 2 only