I want to say that it is C but I'm not sure
I don't understand your question. What role did they play in what exactly? I could be able to help you if I knew what you were referring to.
The Voynich manuscript is an illustrated codex hand-written in an unknown writing system. ... The manuscript is named after Wilfrid Voynich, a Polish-Samogitian book dealer who purchased it in 1912. Some of the pages are missing, with around 240 remaining.