Answer the following question: Read the following article and answer the question. Article: Mrs. Brown lived in a small town near a big farm. One Friday afternoon, after she finished doing housework, she went to her small shop. She opened the window of the shop and looked outside. She liked to see the green farm. There were many cows, horses, and small animals on the farm. Suddenly she saw a kangaroo under her window. It was interesting to see that the kangaroo was wearing an old jacket. It stood there and looked hungry. Mrs. Brown gave some bread and waterto it. The kangaroo had them all. Then it became happy and jumped away. Suddenly something dropped on the ground there was $300 and a photo in it. That was a man's photo with his name "John" on it. John? She looked more carefully and remembered she had a brother many years ago. His name was also John. "Is this man my lost brother?" She thought. She took the wallet with her and began to look for the man. She asked many people in the town, and then she came to the farm and asked the farmer. To her great surprise, it was John, her lost brother. They were very excited and happy to see each other. Question: Which is not mentioned(,) in the story? Answer:

Possible answers:
(a). kangaroo
(b). cow
(c). cock
(d). horse
Answer:
(c).