Which one of the following statements is correct?

A、More than 200 years of the Qing Dynasty was a period with the most significant changes in garment style.;
B、China, as a country made up of 56 ethnic groups that continually influence each other, has undergone continuous transformation in dress style and customs.;
C、China, as a country made up of 56 ethnic groups that continually influence each other, has not undergone continuous transformation in dress style and customs.;
D、China, as a country made up of 56 ethnic groups that less influence each other, has undergone continuous transformation in dress style and customs.