R Roshan 🎓 Extraordinary ⭐ 2.52K Points 📊 PHP Q. What will be the output? Code: $a = null; echo $a ?? 'default'; (A) default (B) NULL (C) Error (D) 0 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (A) default Explanation: Null coalescing operator returns fallback.