Before SP1 was canceled, early builds were made in both formats. Second Edition was originally intended to be released as both a Service Pack 1 upgrade for First Edition users and a full OEM Service Release.
You can also use the version numbers listed before the “A” and “B” identifications to locate the Windows 95 release. A “C” is a bonus Windows 95 B version that includes the Plus Pack for Windows 95.
After receiving a round of applause from the crowd, Bill Gates said that “That must be why Windows 98 isn’t shipping yet.” This event was captured on video and became an internet sensation.