What is the time complexity of the following iterative code used to find the smallest and largest element in a linked li

[answerhappygod]

#include<stdio.h>
#include<stdlib.h>
struct Node
{
int val;
struct Node* next;
}*head;
int get_max()
{
struct Node* temp = head->next;
int max_num = temp->val;
while(temp != 0)
{
if(temp->val > max_num)
max_num = temp->val;
temp = temp->next;
}
return max_num;
}
int get_min()
{
struct Node* temp = head->next;
int min_num = temp->val;
while(temp != 0)
{
if(temp->val < min_num)
min_num = temp->val;
temp = temp->next;
}
return min_num;
}
int main()
{
int i, n = 9, arr[9] ={8,3,3,4,5,2,5,6,7};
struct Node *temp, *newNode;
head = (struct Node*)malloc(sizeof(struct Node));
head -> next =0;
temp = head;
for(i=0;i<n;i++)
{
newNode =(struct Node*)malloc(sizeof(struct Node));
newNode->next = 0;
newNode->val = arr;
temp->next =newNode;
temp = temp->next;
}
int max_num = get_max();
int min_num = get_min();
printf("%d %d",max_num,min_num);
return 0;
}
a) O(1)
b) O(n)
c) O(n2)
d) O(n3)