Read the following article and select the best answer. Article: Tommy buys a ticket and goes in. But after two or three minutes he comes out. He buys a second ticket and goes in again. After a few minutes he comes out again and buys a third ticket. Two or three minutes after that, he comes out a third time and asks for another ticket. Then the girl selling tickets says to him, "Why are you buying all these? Are you meeting friends in the cinema all the time?" "No, I'm not doing that." the small boy says, "But a big woman always stops me at the door and tears my tickets up." Question: The big woman is _ . - Tommy's friend - the girl's mother - a worker in the cinema - a shopkeeper near the cinema
a worker in the cinema