4. (a) A research group is testing the idea that geographic factors might increase the probability of COVID-19 outbreaks. They believe that an outbreak probability depends on how densely populated a region is (high, average or low), the general level of air pollution (high, average, low, very low), and what kind of area it is (tourism area, shopping area, industrial area, residential area). In your own words, describe in detail a Bayesian algorithm to tackle this, including a description of the calculations required, the assumptions made and the probabilities that would have to be specified for your model. As part of your answer, include a diagram of the Bayesian classifier