Write a program in C that uses a pointer-based linked list. You should use the following struct (declared as a global): struct node { char name[10]; struct node *next; }; Note that no other variables can be global. To populate your linked list open the hw11.data file and read in the contents. The file format is as follows: name op_code For example: Vlad a Cullen a Morticia a Ophelia a Smurf a Morticia d The name will be a string. The op_code will be a character ('a' or 'd'), where 'a' indicates that you should add this person to the linked-list, 'd' indicates that you should delete this person from the linked-list. Note that when you add a person you must add them in increasing order. I.e. we are adding them as an insertion sort (no, you cannot presort the list). This MUST be seperate functions (adding and deleting). You also need to provide output that proves your program works. After the last data item has been processed, your program must display the contents of the linked-list. This MUST be a seperate function. if someone could explain how the insertion sort works, that would be helpful. Your program must also correctly free all links of the list on termination. This MUST be a seperate function.