Select the correct answer.

Which compounds are acting like Brønsted-Lowry acids in the following acid-base equilibrium?

HCO3 - + H2O H2CO3 and OH-

A.

H2O and OH-

B.

HCO3 - and OH-

C.

H2O and H2CO3

D.

HCO3 - and H2CO3

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