Diet Cherry Coke has a pH of 2.8, and vinegar has a pH of 3.1. What are the hydrogen ion concentrations ((H⁺]) in Diet Cherry Coke and vinegar?
O 2.8 M and 3.1 M
O -2.8 M and -3.1 M
O 10².⁸ M and 10³.¹ M
O 10⁻².⁸ M and 10⁻³.¹ M