M Mr. Dubey 🎓 Coach ⭐ 103.11K Points 📊 MySQL Q. Which index is automatically created on the primary key? (A) Unique index (B) Clustered index (C) Foreign key index (D) Composite index 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) Clustered index Explanation: MySQL automatically creates a clustered index on the primary key.