Utilize the input text as a context reference, choose the right relationship between Hughes Electronics and General Motors 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.

GM Pioneers Trackers have been around since 1984, when General Motors Co. introduced a class of stock linked to its former computer-services unit, Electronic Data Systems Corp. A second class, for its Hughes Electronics Corp. satellite unit, came out the following year.

Answer: parent_organization