V Vishal Gupta 🎓 Tutor III ⭐ 7.73K Points 📊 Microsoft Excel Q. Excel files have a default extension of (A) Xls (B) Xlw (C) Wk1 (D) 123 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (A) Xls