Utilize the input text as a context reference, choose the right relationship between cash flow and CBS from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

We also used an aggressive CBS focus to keep our cash flow positive and protect the overall financial strength of the company.

Answer: original_broadcaster