If some firms leave a monopolistically competitive industry,the demand curves of the remaining firms will:

A) be unaffected.
B) shift to the left.
C) become more elastic.
D) shift to the right.

If some firms leave a monopolistically competitive industry, the remaining firms will face less competition, which means that they will have a larger market share. As a result, the demand curves of the remaining firms will shift to the right. This can lead to increased profits for the remaining firms in the short run, but in the long run, new firms are likely to enter the industry, causing the demand curves to become more elastic again.