Correct Answer (Detailed Explanation is Below)
A.
Left subtree contains smaller values and right subtree contains greater values
Detailed Explanation
A fundamental
BST property is that values in the left subtree are generally smaller than the node and values in the right subtree are generally greater, subject to the chosen duplicate-value convention. A BST does
not require every node to have two children, and an ordinary BST does not automatically remain balanced. It may become skewed depending on the insertion order. Balanced variants such as AVL and Red-Black Trees add additional rules to control tree height.