Hello Shweta,

  Your questions seems to be incomplete. Please mention complete details of the question you have. With this question we are unable to answer to answer your question. Please mention name of school or college or exam of which information you are interested to know. I hope you will reframe your question to clarify your doubt. Reframe your question and ask a new question which contains all the necessory information required to answer the question.

  Good Luck !!!