I'm feeling confused and uncertain but I'm not sure what to ask. In the conversation that follows, I need you to ask me a series of closed-ended questions, each with multiple-choice answers. I will choose the answer that best fits my situation. Respond in Vietnamese. Based on my responses, your task is to gradually identify the source of my confusion. Rules: You can only ask one question per round. The question should be closed-ended. You must provide multiple-choice answers for each question.