What is the next line?

>>> myDeque = deque('abc')
>>> myDeque.appendleft('x')
>>> myDeque

A. deque([ 'b', 'c'])
B. deque(['x', 'a', 'b', 'c'])
C. An error statement since deques do not have an appendleft method.
D. deque([' 'a', 'b', 'c', 'x'])