In the Parable of the Persistent Widow (Luke 18:1-8), what does the widow's relentless persistence in seeking justice from the unjust judge primarily symbolize?

A The importance of always getting one's own way, regardless of the cost. B The need for believers to continually pray and not lose heart, trusting that God will ultimately answer their prayers. C The idea that even the most corrupt individuals can eventually be worn down by persistence. D A condemnation of all judges who fail to deliver immediate justice.