A muttered rumble was heard from the pen, and I, in my walking stopped to look in.  What was this I saw? A massive beast, hoofed, and jawed.  With spikes upon its mighty brow, I watched as he struck the turf and prowled.  And yet for all of his magnificence, he couldn't get out of that wooden fence. Choices: A: bullbleep; B: place; C: bull; D: book; E: street corner