In the Parable of the Persistent Widow (Luke 18:1-8), what theological principle is Jesus primarily illustrating through the contrast between the unjust judge and God?

A God is similar to the unjust judge in that He is reluctant to answer prayers and requires persistent nagging before He will act. B God is indifferent to the suffering of His people and only responds to those who are wealthy and influential. C God, unlike the unjust judge, is just and compassionate, and will surely bring about justice for His elect who cry out to Him day and night, even though He may seem slow in answering. D The parable teaches that believers should not bother God with their requests, as He is already aware of their needs and will act according to His own timing, regardless of their prayers.