How does the character of Onesimus in Paul's letter to Philemon challenge the prevailing social structures and ethical norms of the Roman world in the 1st century CE?

A Onesimus's conversion and subsequent reconciliation with Philemon primarily served to reinforce the existing social hierarchy by demonstrating a slave's obedience to his master. B Paul's appeal for Onesimus to be received as a brother in Christ implicitly undermines the institution of slavery by emphasizing the spiritual equality of believers, regardless of their social status. C The story of Onesimus is primarily concerned with economic restitution, as Paul encourages Philemon to forgive any financial debts Onesimus may have incurred. D Onesimus's journey symbolizes the separation of church and state, advocating for believers to focus on spiritual matters rather than engaging with societal inequalities.