Which of the following alternatives to the underlined portion would NOT be acceptable?

F. NO CHANGE
G. Swift and beautiful leapers, the deer in our backyard should nonetheless be frightened away by the newness and appearance of the enclosure.
H. While they are swift and beautiful leapers, the newness and appearance of the enclosure should nonetheless serve to frighten away the deer in our backyard.
J. While they are swift and beautiful leapers, nonetheless the newness and appearance of the enclosure should frighten away the deer in our backyard.