The Framing Device of Cervantes' Don Quixote, the Figure of Cide

The framing device of Cervantes' Don Quixote, the figure of Cide Hamete Benengeli who chronicles the novel's 74 episodes, suggests that:

A) The narrator may be lying, since he is a perfidious Muslim.
B) As Don Quixote's wife, she has a reason to exaggerate his chivalrous behavior.
C) The giants Don Quixote claimed to see while tilting at windmills were, like Cide, real.
D) Sancho Panza may have been a double for this figure and the real narrator.