Iwill give brainliest to the first person who can answer correctly.31. based on the photos shown in figure a-19 and your knowledge of small engine parts and operation, which of the following statements is correct? a. engine b is a water-cooled engine. b. both engine b and engine c are air-cooled models. c. engine c is a water-cooled engine. d. both engine a and engine d are air-cooled models.32. from the components that you can see in the photos shown in figure a-19, you can see that engine a and engine c both have a. radiators and cooling fans. b. smooth cylinder heads and flywheels. c. boot-type spark plug connectors and cylinder head fins. d. electronic ignition systems and water-cooling systems