(Solved): If A Particular Market Is Associated With An Externality, The Social Optimum Should Include The Well ...

should i choose a?please explain step by step
If a particular market is associated with an externality, the social optimum should include the wellbeing of: Question 19 Not yet saved Marked out of 1.00 P Flag Select one: a. buyers, sellers and bystanders b. bystanders and buyers c. bystanders and sellers question d. buyers and sellers only