Stephanie, Regine, and Brian ran a 20 mile race. Stephanie and Regine's combined times exceeded Brian's time by exactly 2 hours. If nobody ran faster than 8 miles per hour, who could have won the race?
I. Stephanie
II. Regine
III. Brian
Choose one:
A) I only
B) II only
C) III
D) only I or II only
E) I, II, or III
Let’s assume that Stephanie won the race in record time of 2.5 hrs. In that case   B = R + 0.5   Note that even if R took the minimum possible time of (2.6 hrs), then Brian would be 3.1 hrs and Stephanie would be 2.5 hrs. This case is very much possible. So S came first, then R and B came last.   The same is true with   B = S + 0.5   R came first, S and then B.   So we see that B is a loser in any case, however R or S have equal chances to win.   So (only I or II only) is the answer.
<result>D</result>
Stephanie, Regine, and Brian ran a 20 mile race. Stephanie and Regine's combined times exceeded Brian's time by exactly 2 hours. If nobody ran faster than 8 miles per hour, who could have won the race?
I. Stephanie
II. Regine
III. Brian