Triple

Target entity: Bell Telephone Laboratories
Context triple: [Karl Guthe Jansky, employer, Bell Telephone Laboratories]

• A. Bell Telephone Laboratories chosen
  Bell Telephone Laboratories was a pioneering American research and development organization renowned for groundbreaking innovations in telecommunications and electronics, including the invention of the transistor.
• B. Western Electric
  Western Electric was a major American electrical engineering and manufacturing company best known as the manufacturing arm of AT&T and a pioneer in telecommunications and sound technology.
• C. Bell System
  The Bell System was the historic, vertically integrated telephone monopoly in the United States, led by AT&T, that dominated telecommunications services and research for much of the 20th century.
• D. General Electric Research Laboratory
  General Electric Research Laboratory was a pioneering industrial research center in the United States known for major advances in physics, chemistry, and electrical engineering, and for employing notable scientists such as Nobel laureate Irving Langmuir.
• E. American Telephone and Telegraph Company
  American Telephone and Telegraph Company (AT&T) is a major American telecommunications corporation historically known for its nationwide telephone service monopoly and significant contributions to communications technology.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.