The Presence of Pollution in the Dry Cleaning Industry Leads

The presence of pollution in the dry cleaning industry leads in the long run to dynamic inefficiencies because:

A) people will buy fewer clothes that need dry cleaning than they otherwise would have.
B) people will develop substitutes for dry cleaning that are wasteful.
C) firms will be induced to leave the industry because of artificially high costs.
D) firms whose average private cost is less than price will stay in (or enter) the dry cleaning industry even though their average social cost exceeds price.
E) firms whose average private cost exceeds the price will exit (or fail to enter) the dry cleaning industry even though their average social cost is less than price.