Which of the following demonstrates the endowment effect?

A) If you received a good as a gift, you are less likely to attach a monetary value to the good.
B) Isabella was not willing to part with her "Chris Hemsworth" poster although she was offered $100 for it, a sum greater than what it costs to purchase another such poster.
C) Chris Hemsworth commands a premium in the movie industry because he is endowed with dashing looks.
D) Whelan inherits a cottage in Cape Cod from his grandfather and is unwilling to sell it for sentimental reasons.

B