Two trucks are parked at Charissa's Diner. Ryan leaves the diner, at \(50\) miles per hour, heading due east at \(9\) a.m. in one of the trucks. Two hours later Grace takes off, at \(70\) miles per hour, in the other truck heading due west. How far apart will Ryan and Grace be at \(5{:}30\) p.m.?

A. \(1020\) miles
B. \(920\) miles
C. \(880\) miles
D. \(700\) miles
E. \(570\) miles

The OA is C