Given a singly linked list contains six nodes and simply show as $6->5->4->3->2->1,$ where the head reference refers to the first node $($contains $6$ as its item$).$ Assume the following code applied on the list, what is the item you can find in the first node?

curr $=$ head;

curr$=$curr.next;

head $=$ curr.next;

head$=$head.next;

Question $18$ options:

A$)$

$4$

B$)$

$2$

C$)$

$5$

D$)$

$3$