MrSmithhadaweekholidays,sohesaid,“I'mgoingtoseetheseabytrain．”H

Mr Smith had a week holidays, so he said, “I'm going to see the sea by train．”He put on his best clothes, took a small bag, went to the railway station and got into the train．He had a beautiful hat, and he often put his head out of the window during the trip and looked at the beautiful scenery(景色)．But the wind pulled his hat off．Mr Smith quickly took his old bag and threw it out of the window, too．The other people in the train laughed, “Is your bag going to bring back your beautiful hat?”they asked．“No, ”Mr Smith answered．“But there is no name and no address on my hat, and there's a name and an address on the bag．If someone finds both of them, he or she will send me the bag and hat．”Why did Mr Smith throw his old bag out of the window?Because ________．A.he hoped someone would find his bagB.he hoped someone would send back his bag and hatC.he hoped his bag would bring back his hatD.he hoped the people in the train would laugh