The Parable of the Persistent Widow (Luke 18:1-8) emphasizes the importance of prayer. What specific aspect of God's character is highlighted in contrast to the unjust judge?

A God's indifference to human suffering. B God's desire to delay answering prayers to test faith. C God's willingness to grant justice to those who cry out to Him, even more readily than an unwilling human judge. D God's preference for the poor and marginalized over the wealthy and powerful.