What change, if any, is needed to correct the sentence?
Orson Scott Card's 1985 sci-fi novel Ender's Game tells the story of Ender Wiggin, a brilliant but troubled child struggling with increasingly adult problems as he progressed from his recruitment to battle school at age 6, to his promotion to commander at age 9, and eventually to his role as the unwitting savior of the entire human race.
A. Change "tells" to "told"
B. Change "struggling" to "who struggled"
C. Change "progressed" to "progresses"
D. Make no change