Suppose the field has a length of 6,000 feet. Sally buys fencing to enclose it, but has bought 4 feet too much. Rather than throwing away the extral fencing, Sally enclose a slightly larger field by enlarging each side of the field by the same amount, so the fencing encloses the field and a border:What is the largest animal that could be at point X and be entirely within the border region, touching neither the fence nor the field?(a)an ant(b) a mouse (c)a cat(d)a cow(d)an elephantGive the average rate of change of theperimeter, if the length increases from 6,000 feet to7,000 feet:_________