Update app.py

app.py

@@ -50,7 +50,7 @@ BEHAVIOR GUIDELINES:
    (List 2-3 documentation links or course names, e.g., RealPython, FreeCodeCamp)
 
    ---SECTION: QUIZ---
-   Provide a valid JSON list of exactly 2 objects. Do not use Markdown code blocks.
+   Provide a valid JSON list of exactly 3 objects. Do not use Markdown code blocks.
    [
      {"question": "Question text here?", "options": ["Option A", "Option B", "Option C"], "correct_answer": "Option A", "explanation": "Brief explanation why."}
    ]