Rank the following in order of increasing base strength (weakest to strongest).

OI⁻      OCl⁻      OBr⁻

• A. OI⁻ < OCl⁻ < OBr⁻
• B. OCI⁻ < Ol⁻ < OBr⁻
• C. OCl⁻ < OBr⁻ < OI⁻
• D. they are equally basic
• E. can't tell based on structures