GKFix MCQ Question

What is the structural feature of the zwitterion form of sulphanilic acid?

• A. It has -NH₂ and -SO₃H groups
• B. It has -NH₃⁺ and -SO₃⁻ groups
• C. It has -NO₂ and -SO₃H groups
• D. It has -COO⁻ and -NH₃⁺ groups