Detailed Instructions: In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as `a` for Yes or `b` for No.
Q: Question: When was the corporation established that backed the manage buyout of Sega? Passage:In response to a downturn in the arcade-game market in the early 1980s, Sega began to develop video game consoles—starting with the SG-1000 and Master System—but struggled against competing products such as the Nintendo Entertainment System. Around the same time, Sega executives David Rosen and Hayao Nakayama executed a management buyout of the company with backing from CSK Corporation. Sega released its next console, the Sega Genesis (known as the Mega Drive outside North America) in 1988. Although it initially struggled, the Genesis became a major success after the release of Sonic the Hedgehog in 1991. Sega's marketing strategy, particularly in North America, helped the Genesis outsell main competitor Nintendo and their Super Nintendo Entertainment System for four consecutive Christmas seasons in the early 1990s. While the Game Gear and Sega CD achieved less, Sega's arcade business was also successful into the mid 1990s.

A:
b