Which is the cоrrect equаtiоn fоr аcid-bаse balance? Imagine there are arrows pointing to the right in each of the open spaces. a. CO2 + H+ HCO3- H2CO3 + H2O b. H2O + HCO3- H2CO3 CO2 + H+ c. CO2 + H2O H2CO3 H+ + HCO3- d. H2O + HCO3- HCO3- CO2 + H+ e. CO2 + H2O HCO3- H2CO3 + H+