M Mr. Dubey 🎓 Coach ⭐ 102.92K Points 📊 Ruby Q. What is the method used to define a class variable in Ruby? (A) @@variable_name (B) @variable_name (C) def variable_name (D) self.variable_name 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (A) @@variable_name