Let the six numbers $$a_1, a_2, \ldots, a_6$$ be in A.P. and $$a_1 + a_3 = 10$$. If the mean of these six numbers is $$\frac{19}{2}$$ and their variance is $$\sigma^2$$, then $$8\sigma^2$$ is equal to

A

220

B

210

C

200

D

105