Considering the Parable of the Persistent Widow (Luke 18:1-8), how does the widow's relentless appeal to the unjust judge reflect a broader theological truth about prayer?

A It demonstrates that God is easily annoyed by persistent prayer, but will eventually relent out of exasperation. B It illustrates that God only answers prayers that are repeated continuously without ceasing. C It highlights the importance of manipulating God through emotional appeals to get what we want. D It emphasizes the necessity of unwavering faith and persistent prayer, even when facing seemingly insurmountable obstacles, trusting that God, unlike the unjust judge, is just and compassionate and will ultimately provide justice for those who cry out to Him.