(20pt) Recall the bufferADT which had the same interface buffer.h with implementations (i.e., array, stack, single linked list and circular double linked list). four different Suppose buffer.h has a function void ReverseBuffer (bufferADT buffer) i/ which reverses the order of characters in a given buffer For Example: Suppose buffer has Here is how the buffer conceptually looks like: start! ?? buffer eursor A. After we call ReverseBuffer (buffer); The buffer should have: CBIA a. [5pt] As in the above figure, first draw how the buffer conceptually looks like now. b. [20pt] Then implement this function under circular double linked list representation (next page)