Which of these statements is not correct

Options :
  1. The oldest layer of sap wood lies just outside the heart wood
  2. The youngest layer of heart wood lies just inner to sap wood
  3. The oldest layer of heart wood or secondary xylem lies just outside the primary xylem
  4. The oldest layer of xylem lies at the centre of the pith
Answer and Explanation :-

Answer: Option 4


The oldest layer of xylem lies at the periphery of the pith

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Because I don't think God trusts just anybody with so much heartache. The world has not yet seen what God can do with a man who gives both halves of a broken heart to him. And I don't doubt that a man like that can change the world...or at least a little part of it.
-Chris Fabry Almost Heaven