Question: In the following code for the add method for a linked queue implementation, what is the missing code? def add ( self , newItem )

In the following code for the add method for a linked queue implementation, what is the missing code?
def add(self, newItem):
newNode = Node(newItem, None)
if self.isEmpty():
self.front = newNode
else:
self.rear.next = newNode
self.size +=1
Group of answer choices
self.rear.prev = None
self.front = self.next
self.rear = newNode
self.rear -=1

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