In the Parable of the Unjust Steward (Luke 16:1-13), what is the primary lesson Jesus is conveying about worldly wealth and spiritual priorities?

A That dishonesty can be a pathway to financial success. B That followers should emulate the steward's deceitful practices. C That shrewdness and diligence should be applied to eternal matters, using worldly resources to gain favor with God and others. D That wealth is inherently evil and should be avoided at all costs.