Mark the following statements as true or false.
a. A binary tree must be nonempty.
b. The level of the root node is 0.
c. If a tree has only one node, the height of the tree is 0 because the number of levels is 0.
d. The level of a node in a binary tree is the number of branches on the path from the root to the node.
e. The inorder traversal of a binary tree always outputs the data in ascending order.
f. In preorder traversal of a binary tree, the node is visited before visiting the left and right subtrees.
g. In a binary search tree, the data in a node is larger than the data in its left child, if any.
h. In a binary search tree, the left and right subtrees of a node are binary search trees.
i. To insert a new item in a binary search tree, first we search the binary search tree and find the place where the new item is to be inserted.
j. Typically, a stack is used to implement a nonrecursive traversal algorithm in a binary tree
k. In C++, a function name without any parentheses is considered a pointer to the function.
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