1. [12 points] For the following sub-questions, assume that Head, p and qhave all been declared and the following list structure has been created. (Use the structure below as your starting point for each question.) Head23 Determine what the execution of the given code fragment would do to the given structure. Draw the list structure after execution of each code. a. p.nextq b. q.next p.next; .next null; c. q.next p.next; q.next.nextp; .next null; d, q. next null; = delete pi