12. Arrange the acidity in water for ( A ) HCo(CO)₄, ( B ) HCo(CO)₃{P(OPh)₃}, and ( C ) HCo(CO)₃(PPh₃).
(A) A > B > C
(B) A > C > B
(C) B > C > A
(D) C > B > A

(E) B > A > C

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