Rowena is able to mow \frac25 of a lawn in 18 minutes. If she began the job at 10:00\:a.m., and mowed at this same constant rate, when did she finish mowing the entire lawn?
Answer Choices
A. 10:08\:a.m.
B. 11:30\:a.m.
C. 10:40\:a.m.
D. 10:25\:a.m.
E. 10:45\:a.m.