Choose from options: Determine if the sentence is true based on the text below:
Frank Viola writes mostly on secular topics.

Frank Viola is an American author, speaker, and blogger on Christian topics. His work focuses on Jesus studies and biblical narrative, with a strong emphasis on helping the poor and the oppressed. He is most noted for his emphasis on the centrality and supremacy of Jesus Christ.
Available choices: [+] Yes [+] It's impossible to say [+] No
No