12. Place the following in order of decreasing X-A-X bond angle, where A represents the central atom and X represents the outer atoms in each molecule.

(A)
(B)
(C)
(D)
(E)
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統計: A(0), B(3), C(19), D(1), E(0) #2911530
統計: A(0), B(3), C(19), D(1), E(0) #2911530