In the Parable of the Wedding Banquet (Matthew 22:1-14), what does the king's anger towards the guest without wedding clothes most likely symbolize in the context of salvation?

A God's arbitrary selection of some for salvation and rejection of others. B The importance of adhering to specific cultural norms to be accepted by God. C The necessity of inward transformation and righteousness, not merely outward association with the kingdom of God. D The requirement of performing specific good works to earn salvation.