Scenario A

Scenario A.Marla's Basement is a small retail store that specializes in antique figurines and decorative knickknacks.In analyzing the environment,Marla has uncovered the following interesting findings:
1.Marla has recently purchased more inventory than in the past.The people from whom she buys are selling off more knickknacks because their children are not interested in this type of decorative items and they would prefer to liquidate unnecessary household items to help them with their daily expenses.
2.Marla discovered that her business is in a historical preservation district.As she considers remodeling the shop,she realized that she must pay attention to the guidelines set forth in the governing laws.
3.Marla's buyer-customer base seems to be changing.The tastes of the younger generation near her shop are shifting to modern decor,so the customer base to which she sells is shrinking.
4.Marla has been told that she should consider selling her inventory via the Internet,but she does not own (or understand how to use) a computer.
5.In reading a survey of regional business,Marla discovered that there are no other antique knickknack stores within 200 miles.
-Findings about changing customer preferences and others who sell antique knickknacks are associated with the

A) competitive environment as described by Porter.
B) macroenvironmental economic trends.
C) macroenvironmental political trends.
D) amount of rivalry in Marla's internal environment.
E) barriers to entry in Marla's competitive environment.