Given is the following variant of member function insert of class Node : void Node ;: insert (T& x) { if (x = = value or x * newchild = new Node (x, 0, 0, this): left child - newchild: } else leftChild rightarrow insert(x): } else { if (! rightChild) { Node * newchild = new Node (x, 0, 0, this): right child - newchild: } else rightChild rightarrow insert(x);} } Imagine a set data structure that is rooted in node N3: N3 contains value 3, node N3 has N2 (with value 2) as its left child and node N5 (with value 5) as its right child. Nodes N2 and N5 are leaves. What is the result of function call N3. insert(3)? (a) The set data structure has not changed since it already contained value 3. (b) N3 has left child N2 and right child N5, and N2 has a right child with value 3. (c) N3 has left child N2 and right child N5, and N5 has a left child with value 3. (d) Given the above implementation, a new node with value 3 is both the right child of N2 and the left child of N5