Convention: When necessary, the key must be replaced by the smallest key in the right subtree. Answers that do not follow this convention are considered wrong and receives the mark 0 . 1. After inserting the key 8 in the BST he tree becomes: (E) None A B C D E 2. After deleting the key 9 from the BST the tree becomes: (B) (D) (E) None A B C D E