Shannon bakes cookies and Justin grows vegetables. In which of the given cases is it impossible for both Shannon and Justin to benefit from trade? Is it(a) Shannon doesn't like vegetables and Justin doesn't 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) all of above are right?