Consider the following statements relating to amendment under Article 368 and choose the correct one:

• A. The required majority in each House of the Parliament has to be those of only who are present.
• B. The required majority of each House has to be only of those voting.
• C. The required majority of each House has to be those of the total strength of each House.
• D. The required majority of each House has to be those who are both present and voting.