The gain of the multiple-feedback band-pass filter above is equal to which of the following? Assume C = C 1 = C 2 .

• A. A 0 = R 2 / R 1
• B. A 0 = R 1 / R 2
• C. A 0 = R 2 / 2 R 1
• D. A 0 = R 1 / 2 R 2