Calculate either [H3O+] or [OH−] for each of the solutions at 25 °C. Solution A: [OH−]=2.01×10−7 M

Solution A: [H3O+]= M

Solution B: [H3O+]=8.23×10−9 M

Solution B: [OH−]= M

Solution C: [H3O+]=0.000605 M

Solution C: [OH−]= M

Which of these solutions are basic at 25 °C?