Shannon bakes cookies and Justin grows vegetables. In which of the following cases is it impossible for both Shannon and Justin to benefit from trade? Is it(a) Shannon does not like vegetables and Justin does not like cookies? Is it(b)Shannon is better than Justin at baking cookies and Justin is better than Shannon at growing vegetables. Is it (c)Justin is better than Shannon at baking cookies and at growing vegetables. Is it (d) akk if the above are correct?