In the Parable of the Persistent Widow (Luke 18:1-8), what attribute of God is Jesus primarily emphasizing, and how does this contrast with the character of the unjust judge?

A God's capriciousness and unpredictability, similar to the unjust judge. B God's reluctance to answer prayers, requiring constant nagging. C God's inherent justice and willingness to hear and respond to the cries of those who call upon Him, in stark contrast to the judge's indifference. D God's favoritism towards widows and the marginalized.