How Does Breathing at a Very Low Rate Affect the Reaction

How does breathing at a very low rate affect the reaction H⁺ + HCO₃^- $\rarr$ H₂CO₃ $\rarr$ H₂O + CO₂ ?

A) pushes it to the right
B) pushes it to the left
C) does not affect it
D) increases the rate at which it occurs
E) decreases the rate at which it occurs