单项选择题

Which of the following items is tree

A.Miss Patty Ching’s tour lasted 3 weeks.
B.Top-class Photo services compensated Miss Ching because the judge ordered them to pay compensation.
C.According to Wendy, the problem with sale prices is that the reductions may not be enough.
D.Mr. Alvin Lok was surprised because at the sale the price of the belt had reduced by only fifty dollars.