Standing in Line at a Small-Town Grocery Store Gives People

Standing in line at a small-town grocery store gives people a chance to socialize.Is this a positive externality associated with the act of shopping? Why or why not?

A) Yes,because chatting with others is not inherently part of buying groceries.
B) No,because the benefit is to the shoppers,not to third parties.
C) Yes,because in large cities such socializing would not occur.
D) No,because people can easily socialize elsewhere,as well.
E) Yes,because not every shopper is in a mood to talk.