4. C Programming (20 points) A circular linked list consists of list nodes that are linked into a circle such that (a) every node links to another node in the same list and (b) every node is linked to by exactly one node in the list. List nodes are represented by this struct: struct list node char *name; int rating; struct list.node xnext A. Write a function that allocates and initializes a circular linked list containing one node using the provided name and rating. Return a pointer to the new node. If the node cannot be created, return NULL. struct list node create(char *name, int rating.)