Consider the following statements regarding the decisions of the Supreme Court in the Kesavananda Bharati Case (1973):
1. Supreme Court ruled that Parliament cannot violate the 'Basic Structure' of the Constitution through amendments.
2. The Supreme Court reserved to itself the right to decide which part of the Constitution forms the Basic Structure.
3. The Supreme Court upheld its earlier decision and held that Preamble is not a part of the Constitution.
How many of the above given statements are correct?