Rebecca is a single woman in her 40s. She sold her Honda Civic and bought an Acura CSX, which is considerably more expensive. She was going to her brother's house with her mother, and she asked her mother to drive in her car instead of Rebecca's new one. She didn't want her brother to see that she had purchased an expensive car for herself. Rebecca was experiencing _____.
选项：

A: postpurchase anxiety
B: consumption guilt
C: consumption anxiety
D: postpurchase dissonance
E: consumption dissonance