In which order does MySQL process an incoming INSERT statement?

It checks whether the user is authorized to perform the query, writes to the binary log, and then optimizes it.

It checks whether the user is authorized to perform the query, optimizes it, and then writes to the binary log.

It writes the query to the binary log, optimizes it, and then checks whether the user is authorized to perform the query.

It optimizes the query, checks whether the user is authorized to perform it, and then writes to the binary log.