In the Parable of the Unjust Steward (Luke 16:1-13), what does Jesus primarily illustrate through the steward's shrewdness, and how should believers apply this principle?

A The endorsement of dishonesty as a viable strategy for financial gain. B The importance of using worldly resources wisely and strategically to gain eternal rewards. C The justification of manipulating situations to avoid the consequences of one's actions. D The condemnation of all forms of financial planning and management.