M Mr. Dubey 🎓 Coach ⭐ 103.71K Points 📊 JAVA Q. What is the type of `x -> x.toUpperCase()` if x is a String? (A) Predicate<String> (B) Function<String, String> (C) Consumer<String> (D) Supplier<String> 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) Function<String, String> Explanation: It takes a String input and returns a String output, which is a Function.