Wuyue returned without looking at the mountains and Jiuzhai returned without looking at the water. Mr. Li decided to stop visiting the mountains and water in the future. He must have visited Wuyue and Jiuzhai. which is most similar to the logical inference structure of the sentence above? ['Phytosterol is an important physiologically active substance. Ingestion of phytosterols can greatly help reduce cholesterol. People with high cholesterol must rarely use foods with high phytosterols.', 'Green tea is unfermented tea, black tea is fully fermented tea, and Tieguanyin is semi-fermented tea, which is neither green tea nor black tea, so it is called oolong tea.', 'The road that the city cleaning vehicle passes is always wet. Today the road surface on the elevated road is very dry. The cleaning vehicle must not have been there.', 'Pulmonary diseases are largely related to smoking. Patients who detect tumors in the lungs usually choose to quit smoking. Li Gang recently planned to quit smoking. He must have detected lung tumors.']