Suppose I throw 10 balls into 5 bins labeled A, B, C, D, E uniformly at random. Call a pair of bins special if they are labeled with adjacent letters {i.e., the pairs AB, BC, CD, DE are special). The expected number of special pairs of bins which are both empty is: O (901/5)10 0 4(3/5)10 O 4(13\")/ (3) O none of the above