$3$A$)$ Consider an array $A[1$dotsn$]$ with size $n.$ This array is used to implement multiple stacks of varying

sizes $s_1,s_{2}dots{s}_k.$ The size of each stack is the user input. Write functions to perform the following

operations:

i$)$ Implement PUSH operation on the stack whose number is an input from the user.

ii$)$ Implement POP operation on the stack whose number is an input from the user.

$3$B$)$ Identify and represent the graph shown in Figure Q$\mathrm{.}3$B that is suitable for its traversal using DFS

technique. Write a function to traverse the graph using DFS technique and count the total number of

nodes that contain odd number as the data.

$3$C$)$ Write a user defined function to copy one binary tree to another.