One day a mouse was playing in the forest and lion caught it and said,” I shall eat you up.””Don’t eat me up” said the mouse. “Someday I will help you” “Oh how? laughed the lion. How can you help me? I am very large lion and you are a very small mouse. ” But the lion was not hungry and he didn’t eat the mouse.

The next day a hunter came and put a large net in the forest to catch the lion. That night the lion walked in the forest and was caught in the net.” I can’t get a way!;’ he said.” I am caught in the net, Help! Help!”

The mouse came and saw the lion in the net”! will save you;’ he bit the net a hundred time, and the lion got away. The lion said, “Thank you, mouse. I am large and you are small brown mouse, but you have helped me”

“You didn’t eat me yesterday, and I have saved you from the hunter today”, said the mouse. They laughed and went away together in the forest.
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“I am large and you are small….” (paragraph 4). What does “I” refers to …
A. A mouse
B. A lion
C. A writer
D. A reader
E. A listener