Figure 7.14 shows a linked list that contains 2 nodes that store an integer value Answer the questions in this section based on the linked list in Figure 7.14 next item item next head 2 7 previous! current Figure 7.14 A new node pointed by n (as shown in Figure 7.15) is going to be added in the linked list in Figure 7.14. Write source codes that will insert the new node in the linked list based on the following criteria. item next n 6 Figure 7.15 a. Insert in front of the list. b. Insert in the middle of the list - between previous and current c. Insert at the end of the list-after current. list is