Pick out the wrong statement. A. Caustic embrittlement of boiler’s metallic parts is caused by high concentration of caustic soda in boiler feed water___________________?

• A. Cooling and freezing of water kills the bacteria present in it
• B. With increasing boiler operating pressure of steam, the maximum allowable concentration of silica in feed water goes on decreasing
• C. Dissolved oxygen content in high pressure boiler feed water should be nil
• D. None of these