R Ram Sharma 🎓 Coach ⭐ 193.88K Points 📊 C Programming Q. Which of the following is not a valid variable name declaration? (A) int _1v (B) int 1_v; (C) int v_1; (D) int _v1; 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) int 1_v;