Most commonly "C", because they would want the reader to understand that something is different. Yes, they can change the style whenever they want to, but it would be more meaningful if they did it for a reason.
Can you provide anymore information or was that the whole question?
And no Marvell, if they were thus joyefull, seeing wise Seneca was so affected with sailing a few miles on he coast of his owne Italy; as he affirmed, that he had rather remains twentie years on his way by land then pass by sea to any place in a short time; so tedious and dreadful was the same unto him
I think it's the last one
