Ginger is pungent and warm, and the gas in the stomach needs to rise in the morning. Eating ginger can strengthen the spleen and warm the stomach, encouraging the yang to rise; At night, the qi of the human body should be the accumulation of yang and the abundance of yin. Eating ginger at this time violates the physiological law and should be "not eating ginger at night." Item a is wrong. Eating seasonal food is good for your health, and item B is seasonal food. Correct. Item C uses the cold and heat of radish and ginger to coordinate with the cold and heat of the season to regulate yin and yang, which is in line with the way of health preservation and correct. According to the viewpoint of TCM health preservation, tonic is needed in autumn, and the weather is getting colder since the first frost. At this time, tonic can moisten dryness, consolidate exterior and replenish qi. Item d is correct. So, the answer to this question is a.