If the differential amplifier gives a positive output then it infers which of the following (Reference output is given to the positive terminal and sample output is given to the negative terminal)?

• A. The concentration of silica in sample and reference solution is equal
• B. The concentration of silica in a reference solution is more than that in the sample solution
• C. The concentration of silica in sample solution is more than that in the reference solution
• D. Further processing is required to come to any conclusion