QUIZ 7
       (Z)

       |/|              (A)         (B)
      /   \           _______     _______
     /     \         √ 1 + 2     √ 3 + 4
  |√|       |+|      --------    --------
   |       /   \      3 + 4       1 + 2
   |      /     \ 
  |+|    3       4           1 + √2
 /   \                 (C)   ------
1     2                      3 + 4

(Z)  -->  (A) | (B) | (C) ?

(Z)  -->