How does Tu Reh's new sense of purpose in chapter 7 contribute to theme of the text? A.He is determined to defeat the Burmese so his people can live in safety. B.He realizes that he wants to learn to read and write so he can become a healer too. C. He now sees his bamboo spear as an instrument to protect others instead of simply killing. D. He wants to interrogate Chiko to find out as much as he can about the Burmese army and its plans to destroy his people.