Explanation

  To determine the binary tree from "DEBFCA," we must assume that this represents a preorder traversal of the tree, where the nodes are visited in the order: Root → Left Subtree → Right Subtree.

In this case, "D" is the root.

Then, based on the rest of the sequence, we build the tree.

Steps:

D is the root.

E appears after D, so it must be part of the left subtree.

B is after E, indicating that B is part of E's left subtree.

F comes after B, implying it belongs to the right subtree of D.

C appears next, suggesting it is part of B's right subtree.

A is the last, indicating it's the left child of F.

Thus, the tree is:

D is the root.

E is the left child, and F is the right child.

B is the left child of E, and C is the right child of E.

A is the left child of F.

Correct Option:

Option 3:

"D is the root, with E as the left child and F as the right child. E has B as the left child and C as the right child, and F has A as the left child."