Example Code Ch 13-3

Example Code Ch 13-3
Assume that countIt and sumIt methods receive a parameter, Node temp, which references the first Node in a linked list where Node is a class that consists of data instances int info and Node next, and further assume that the int variables count and sum are initialized to 0.
-Refer to Example Code Ch 13-3: Which of the following methods could be used to sum the number of items in the linked list?

A) public int sumIt(Node temp)
{
While (temp != null)
{
Sum += temp.info;
Temp = temp.next;
}
Return sum;
}
B) public int sumIt(Node temp)
{
While (temp != null)
{
Sum += temp.info;
}
Return sum;
}
C) public int sumIt(Node temp)
{
While (temp != null)
{
Sum++;
Temp = temp.next;
}
Return sum;
}
D) public int sumIt(Node temp)
{
While (temp != head)
{
Sum += temp.info;
Temp = temp.next;
}
Return sum;
}
E) public int sumIt(Node temp)
{
While (temp != null)
{
If (next != null) sum += temp.info;
Temp = temp.next;
}
Return sum;
}