The book of Esther does not explicitly mention the name of God. What are some proposed explanations for this conspicuous absence?

A The author intended to create a secular historical narrative, focusing on political intrigue rather than religious themes. B The book was originally written for a Jewish diaspora community in Persia, where openly mentioning God's name could have been dangerous. C The book was deliberately written to be included in the apocryphal books of the Bible, which often omit direct references to God. D The author believed God's presence was implied through the events of the story, emphasizing divine providence working behind the scenes rather than direct intervention.