单项选择题

Harry finished his college and wanted to find a job in the city, One day he saw an advertisement in a window. It said, "Wanted. The best salesman in the world. Top Pay."
"I’m a great salesman, " Harry said to himself." I’m sure that I can sell anything. I’ll go in and ask for that job. "So Harry went into the building. He saw a manager in it. He said to the manager, " Good morning. I saw your advertisement. I think I’m the best salesman in the world. Give me the job, please."
"You must prove that you’re the best, " the manager said.
"I’ll pass every test that you give me, " Harry. said.
"Good, " the manager said, and he took a box of sweets out of his desk. "Last week I bought a thousand boxes of this sweets. If you can sell them all before the end of the week, you can have the job."
"That’s easy, " Harry said. He took the boxes of sweets and left the office.
Every day and all day he went from shop to shop, trying to sell boxes of the sweets. But he couldn’t sell one. The sweets were so bad that he couldn’t even give them away. At the end of the week he went back to the manager. "I’m sorry, sir, " he said. "I was wrong about myself. I’m not the best salesman in the world, but I know who is."
"Oh, " said the manager, "who do yon think is the best"
"The person who sold you a thousand boxes of the sweets." Harry couldn’t sell the sweets because ______.

A. he was not a good salesman
B. the sweets were too bad
C. nobody Liked sweets