A long-distance runner takes between 5 and 7 minutes to run one mile during the first half of a cross-country race. During the second half, she starts to get tired and adds 1 to 2 minutes to the time it takes her to run a mile. What are the minimum and maximum munber of minutes it would take the runner to run one mile during the second half of the race?
(A)5 and 7 minutes (B)6 and 8 minutes (C)6 and 9 minutes (D)7 and 8 minutes (E)7 and 9 minutes
C