Arrange the following in increasing order on the basis of dispersion of data with given mean, number of data points and sum of squares:
A. \(n=5,\ \sum x^2=100,\ \bar{x}=3\);
B. \(n=5,\ \sum x^2=100,\ \bar{x}=4\);
C. \(n=10,\ \sum x^2=100,\ \bar{x}=2\);
D. \(n=10,\ \sum x^2=100,\ \bar{x}=3\).