There are three people walking along a street, first a big man, then a pretty girl, and then an old gentleman.
The first two went round a comer. Suddenly the gentleman saw a piece of paper on the ground. He picked it up, it was five pounds. A few seconds later, the girl came back, crying. She said, "I've dropped five pounds".
"Don't cry", said the gentleman, "Here it is". The girl thanked him and went away. After a few seconds, the big man came back, he was looking for something. Suddenly a small man opened a window and said, "I saw five pounds fall from your pocket, but that man gave it to a girl". The big man was very angry. The gentleman was frightened and gave him another five pounds. When the gentleman had gone, the girl came back to receive her one pound sixty-seven pence and the small man came out to get his.
Who do you think really lost five pounds？

A. The gentleman.
B. The small man.
C. The big man.
D. The pretty girl.