Which of the following are reasons to expect that in a perfectly competitive market economy with no government intervention in the market for education there is an externality associated with education that makes people get socially inefficient amounts of it?
a. Better educated consumers speed the adoption of new technology. b. Better educated people tend to be less likely to commit crimes. c. Better educated people tend to be more productive at their jobs. d. Better educated people tend to help their coworkers be more productive at their jobs. e. Better educated people tend to be better informed and more active voters. f. None of the above.