While Taking a Human Physiology Midterm Exam,Susan Came Across a Question

While taking a human physiology midterm exam,Susan came across a question on material she had not studied.Suddenly she experienced difficulty reading the words on her exam.She correctly assumed that the most logical explanation for this was that

A) She had suddenly developed presbyopia
B) Activation of her parasympathetic nerves had caused sudden contraction of her ciliary muscles
C) Activation of her sympathetic nerves had caused sudden contraction of her ciliary muscles
D) Activation of her parasympathetic nerves had inhibited contraction of her ciliary muscles
E) Activation of her sympathetic nerves had inhibited contraction of her ciliary muscles