The correct option is B. Can ever dissever my soul from the soul.
This pattern can be recognized when listening to a recitation of the poem. Here, Edgar Allan Poe is using a iambic pattern. This metter is one of the most common pattern in poetry and in which an unstressed syllable is followed by an stressed. In previous verses of the poem, he combines iambic pattern with an anapest (two unstressed syllables followed by a stressed syllable.
But in this line, he uses a iambic. So the correct answer is the second one.