Select the correct option to test your answer: A 137 fire tubes and 44 superheated tubes B 147 fire tubes and 34 superheated tubes C 157 fire tubes and 24 superheated tubes D 167 fire tubes and 14 superheated tubes Correct Answer: Option C (157 fire tubes and 24 superheated tubes) Verified correct option for Mechanical Engineering (Steam Boilers, Engines, Nozzles And Turbines).