As the picture shows, it is the weather forecast of a certain area on a certain day issued by China Meteorological Bureau. The following statement about the temperature of the day is correct: () A. Th

As the picture shows, it is the weather forecast of a certain area on a certain day issued by China Meteorological Bureau. The following statement about the temperature of the day is correct: () A. This. A, the difference between the highest temperature and the lowest temperature is 4℃-(-4℃)=8℃, so A is correct;

B, the temperature changes all day, so B is wrong;

C, the lowest temperature is -4℃, so C is wrong;

D, the temperature changes all day, so D is wrong;

So choose a.