An issuer is conducting an interstate public offering and has filed a registration statement with the SEC under the Securities Act of 1933. To register the same offering in a state, the issuer would most appropriately use:

Explanation

Registration by coordination is designed for offerings registered federally under the Securities Act of 1933; the state filing rides alongside the federal one and becomes effective at the same moment as the federal registration, provided the state's timing and pricing conditions are satisfied. Qualification is the fallback for offerings with no federal filing. Notification is a streamlined route reserved for established issuers. Federal preemption applies only to federal covered securities, which is a separate concept from simply having filed with the SEC.