Janeczko explains that Van Lew put enciphered messages in a book’s spine and added pinholes above letters on select pages. How does this information further develop the central idea that Van Lew’s actions revolutionized the expectation and role of women in society? Check all that apply.

to illustrate how Van Lew continued to swap intelligence with prisoners
to emphasize Van Lew’s resourcefulness and determination
to provide insight into the morale of rebel troops
to demonstrate the use of encrypted messages in the Civil War
to illustrate Van Lew’s loyalty to the prison commandant