a, b, and c are each asked how knowledgeable they are about how airplanes work. a, b, and c all know what airplanes are and have ridden on commercial airplanes before. a has no additional knowledge about airplanes and has no background in mechanics or engineering. b has a fair amount of experience fixing cars and has a degree in mechanical engineering. they also took a couple flying lessons a few years ago. but b has never done mechanical work on a plane before. c also has a degree in mechanical engineering as well as a pilot's license. c spent two years working for a company that designed airplanes before transferring to a new company. in c's new job, they don't do any work on airplanes. c realizes that there have been innovations in flight technology since they left the field. using the dunning-kruger effect as your guide, how knowledgeable do you think a, b, and c will each say that they are about how airplanes work? why?