In the Parable of the Unjust Steward (Luke 16:1-13), what is the key lesson Jesus intends to convey regarding the use of 'worldly wealth' (mammon)?

A That dishonesty is acceptable as long as it benefits the poor. B That shrewdness and foresight, even in worldly matters, should be applied to spiritual matters. C That wealth is inherently evil and should be avoided by true believers. D That believers should strive to become wealthy in order to give more to the church.