Needs these answere ASAP!

(TCO 6) In the following binary tree, the height of the node with value 6 is _____.

(TCO 6) What binary search tree operation does the method below define? Assume that Node is a class storing the information of a node. elementType method(Node r) { if (r.leftChild()==NULL) return r.info(); else return method(r.leftChild()); }

1. It finds if this is a binary search tree.

2. It finds the root of the binary search tree.

3. It finds the smallest element in the binary search tree.

4. It finds the greatest element in the binary search tree.

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