Which reaction below corresponds to the K f for Co(NH3)42+:
A. Co2+(aq) + 4 NH3(aq) → Co(NH3)42+(aq)
B. Co(s) + 4 NH3+(aq) → Co(NH3)42+(aq)
C. Co(NH3)42+(aq) → Co2+(aq) + 4 NH3(aq)
D. Co(NH3)42+(aq) → Co(s) + 4 NH3+(aq)
E. Co(NH3)42+(aq) + 4 H2O(l) → Co(NH4)42+(aq) + 4 OH−(aq)
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