What do you need to keep in mind when telling a story to begin your speech？

What do you need to keep in mind when telling a story to begin your speech？
A.Tell any story
B.Tell a story that is unrelated to the topic of your speech.
C.Tell a short story that is related to the topic of your speech.
D.Tell a long story
正确答案：Tell a short story that is related to the topic of your speech.