Step 1: Read Article 368 carefully.
Article 368(2) states that a Constitutional Amendment Bill may be introduced in either House of Parliament and must be passed in each House separately by a special majority (majority of total membership + two-thirds of members present and voting).
Step 2: Note the federal ratification requirement.
If the amendment seeks to change federal features (e.g., election of the President, extent of executive/legislative powers of the Union/States, Supreme Court/High Court jurisdiction, distribution of legislative lists, or representation of States in Parliament), it also needs ratification by at least one-half of the State legislatures.
Step 3: Contrast with Money Bills and joint sitting.
Unlike a Money Bill (Art. 109), a Constitutional Amendment Bill is not restricted to Lok Sabha and there is no provision for a joint sitting to resolve disagreement—both Houses must pass the same text.
Step 4: Presidential assent.
After passage (and ratification, if required), the President shall give assent (post-24\textsuperscript{th} Amendment), whereupon the Bill becomes an Amendment Act.
Step 5: Conclude.
\[
\boxed{\text{It can be introduced in {either} House—Lok Sabha or Rajya Sabha (Option C).}}
\]