Select the correct option to test your answer: A Dilution of fuel in the crankcase B Dilution of oil by water in the crankcase C Dilution of lubrication oil by fuel in the crankcase D Dilution of mixture passing through crankcase in two stroke engines Correct Answer: Option C (Dilution of lubrication oil by fuel in the crankcase) Verified correct option for Mechanical Engineering (Automobile Engineering).