Final answer:
SEGA was initially called Service Games before adopting its current name.
Step-by-step explanation:
The correct answer is OA. Service Games. When SEGA was first established in 1940, it was called Service Games, which was a company that imported and distributed slot machines to U.S. military bases in Japan. It wasn't until 1965 that SEGA adopted its current name.
Learn more about Company name change of SEGA