During a compliance drill, focus on how the Uniform Securities Act applies here. Prioritize the registration trigger and ignore irrelevant noise. XYZ Corp. files a registration statement with the SEC and with the state of Illinois by coordination. The federal registration becomes effective at 3:00 PM on March 15. When does the state registration become effective?

Why D — At the same time as the federal registration, provided the state has received no stop order and the registration has been on file for a specified number of days

Under USA Section 303, the state registration by coordination becomes effective at the same moment the federal registration statement becomes effective, provided that no stop order is in effect, the registration has been on file with the state for a statutory minimum period, and a statement of the maximum and minimum offering price has been provided. The extra setup is just noise; the controlling state-law rule stays the same.