What is the shape of the following distribution?

{9, 10, 10, 11, 11, 12, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 17, 18, 19, 20]


A.negative skew

B.postive skew

C.symmetric

D.asymmetric with no skew

E.none of the above