【单选题】

·You will hear a talk presented by a reporter. This talk is about deceptive packing.·For each question 23—30 mark one letterA,

B、orC、for the correct answer.·After you have listened once, replay the recording. Consumers are concerned about the changes in the package size, mainly because ______.
A、they hate to see any changes in things they are familiar with
B、the unit price for a product often rises as a result
C、they have to pay for the cost of changing package sizes