A historian claims massive drought and famine in China caused the Boxer Rebellion. Which of the following historians is making a counterclaim?

A. A historian who shows that harvest yields declined in the years before the Boxer Rebellion

B. A historian who claims the Boxer Rebellion followed directly from the actions of external colonial powers

C. A historian who offers evidence that Christians were targeted during the Boxer Rebellion

D. A historian who shares a diary entry from a Chinese woman who lost her crops to drought