Which is the best paraphrase of the following passage from the 1931 edition of Frankenstein?
I saw—with shut eyes, but acute mental vision—I saw the pale student of unhallowed arts kneeling beside the thing he had put together. I saw the hideous phantasm of a man stretched out, and then, on the working of some powerful engine, show signs of life and stir with an uneasy, half-vital motion. Frightful must it be, for supremely frightful would be the effect of any human endeavor to mock the stupendous mechanism of the Creator of the world. (Shelley, Mary. Frankenstein. Penguine Books, 1963. x-xi.)

A.
Shelley describes seeing the hideous phantasm of a man stretched out, and then, on the working of some powerful engine, show signs of life and stir with an uneasy, half-vital motion.

B.
Shelley describes the vision that inspired her novel as one in which she saw the doctor kneeling beside the monster, and saw the monster move in response to the working of a machine.

C.
Shelley describes seeing a hideous phantasm of a man stretched out, and then, on the working of some powerful engine, saw it show signs of life, and stir with an uneasy, half-vital motion.