The managers of 21 supermarkets counted the number of cars in their parking lots at noon on the same day. The results are shown in the list. 98, 100, 101, 102, 108, 109, 111, 118, 129, 132, 133, 135, 135, 145, 146, 146, 156, 170, 176, 180, 180 Suppose the number of cars in one of the parking lots with 180 cars is changed to 160 cars. Which statement about the median and interquartile range after this change is true?

A. The median and the interquartile range do not change.
B. The median and the interquartile range both decrease.
C. The median decreases, and the interquartile range does not change.
D. The median does not change, and the interquartile range decreases.​