What is the front element in the queue if the following operations are executed upon an initially empty queue?

enqueue$(20),$ enqueue$(2),$ enqueue$(13),$ dequeue$(),$ dequeue$(),$ enqueue$(0),$ dequeue$(),$ enqueue$(12),$ enqueue$(3),$ dequeue$(),$ dequeue$(),$ enqueue$(7),$ enqueue$(6),$ dequeue$(),$ peek$(),$ dequeue$()$

Question $4$ options:

A$)$

$13$

B$)$

$6$

C$)$

$3$

D$)$

$7$