Which one is a noun clause?

• The correct sentence: I asked Jony where he had been. (অপশন 'খ')

• Noun clause:
- যেসব subordinate clause noun এর মত কাজ করে থাকে।
- অর্থাৎ - বাক্যে subject/ object/ complement হিসেবে কাজ করে থাকে তাদেরকে Noun clause বলে।
- Preposition এর object হিসেবে বাক্যে Noun clause ব্যবহৃত হয়ে থাকতে পারে।
- A noun clause functions as a noun within a sentence, often serving as the subject, object, or complement. In this example, "where he had been" is a noun clause because it acts as the object of the verb "asked."