Which of the following statements is/are correct regarding the impeachment of President?

1. 1.The impeachment process can be initiated by either House of Parliament but needs to be signed by one-fourth members of both Houses.
2. 2.The President can be removed from office by impeachment process for violation of the Constitution, which is defined in the Constitution.
3. 3.President can resign from office any time by addressing a letter to the Chief Justice of India.

Select the correct answer from the codes given below: