8) Three friends regularly go to the park to run: the first one every 10 days, the second one every 15 days, and the third one every 14 days. One Sunday they happen to run together. After how many Sundays will they meet at the park for the first time to run together again?
$\begin{array}{ll}\text { (A) } 22 & \text { (B) } 25\end{array}$
(C) 30
(D) 70
(E) never.