Final answer:
Shannon's willingness to pay for the CD player is $25, and she received a consumer surplus of $25.
Step-by-step explanation:
A consumer surplus occurs when a consumer is willing to pay a higher price for a product than what they actually have to pay. In this case, Shannon's willingness to pay is $25 for the CD player, but she only paid $135. The consumer surplus is the difference between what Shannon was willing to pay and what she actually paid, which is $25. Therefore, the statement is true.