A dog has been seen on the streets of Jilin with a board held in her mouth reading that it was looking for her puppy. According to the dog's owner, his dog is trained and able to follow his instructions. He wrote a sign reading, "Anyone who can find our dog we will have a reward for them." The owner said the dog hasn't eaten anything since it lost the puppy, so he came up with the idea to let the dog help look for their missing family member.

What does the dog hold in her mouth?

A. A card

B. A board

C. A piece of paper

（中國日報網英語點津 陳丹妮 編輯）