Taiwan Throwing Eraser

You have an exam recently? You don't know how to make a decision recently? Many people will "throw the stick" to ask God to ask the general, and ask YES or NO. In the examination room, nothing can be brought, but pencils and erasers are necessary. Therefore, throwing the eraser can help you decide in the examination room. The answer should be ABC or D ^_^ Gifts and personal use are all blessed!