What is the conjugate base of ${{\text{H}}_{\text{2}}}{\text{C}}{{\text{O}}_{\text{3}}}$ according to the Brønsted-Lowry theory?

A.     ${\text{CO}}_{\text{3}}^{{\text{2}} - }$

B.     ${\text{HCO}}_{\text{3}}^ -$

C.     ${{\text{H}}_{\text{3}}}{\text{CO}}_{\text{3}}^ +$

D.     ${\text{C}}{{\text{O}}_{\text{2}}}$

B