Of a particular major car manufacturer, 27% of all cars made offer power locks as a standard feature and 80% offer passenger side airbags as a standard feature.A. If 7 cars are selected at random, what is the probability that one or fewer will offer power locks as a standard feature?B. If 15 cars are selected at random, what is the probability that at least 9 will have passenger side airbags as a standard feature?C. If 20 cars are selected at random, what is the probability that between 11 and 17 (inclusively) will have passenger side airbags as a standard feature?D. If 25 cars are selected at random, what is the expected number of cars which have passenger side airbags? What is the variance number of cars which have passenger side airbags?