Regarding the characteristics of human body temperature, which of the following description is wrong?
选项：

A: The normal oral temperature of adults is maintained at about 37℃;
B:The normal body temperature may fluctuate from day to night;
C:The body temperature is affected by gender, age and so on.;
D:Humans maintain their body temperature mainly by wearing thick clothes and adjusting the ambient temperature;
E:A relatively stable body temperature is a necessary condition for maintaining the body's metabolism and life activities.