Update dataset_loader.py

dataset_loader.py

@@ -15,7 +15,7 @@ class MultiFileDataset(DatasetBuilder):
                 "options": Sequence(Value("string")),
                 "answer": Value("string"),
                 "prompt": Value("string"),
-                "num_options": Value("int32"),  # Assuming numeric values are expected for this field
+                "num_options": Value("string"),  # Assuming numeric values are expected for this field
                 "question_type": Value("string"),
                 "exam_id": Value("string")  # Assuming all records will have an exam_id; use default value otherwise
             }),