The dot plots show the forearm lengths of 2 groups of 10 students. What statements could be true

A.The standard deviation of group A is equal to the standard deviation of group B.

B.Group A has greater variability than group B

C.All of the people in group A have longer forearms than the people in group B.

D.Using only group A , the mean is equal to the median .

E.The meanbof group A's lengths is greater then the means of group B's lengths