Triple

Target entity: British atomic bomb project
Context triple: [William Penney, participatedIn, British atomic bomb project]

• A. Tube Alloys programme chosen
  The Tube Alloys programme was the secret British project during the Second World War to research and develop an atomic bomb, preceding and later merging into the American-led Manhattan Project.
• B. MAUD Report
  The MAUD Report was a secret 1941 British scientific assessment that concluded an atomic bomb was feasible and helped spur the U.S. Manhattan Project.
• C. MAUD Committee
  The MAUD Committee was a British scientific advisory group during World War II that conducted pioneering research into the feasibility of an atomic bomb, helping to spur the later development of the Manhattan Project.
• D. Manhattan Project
  The Manhattan Project was the secret U.S.-led World War II research and development program that produced the first nuclear weapons.
• E. Frisch–Peierls memorandum
  The Frisch–Peierls memorandum was a pivotal 1940 document by physicists Otto Frisch and Rudolf Peierls that first outlined the feasibility of a small, practical uranium-based atomic bomb, helping to catalyze British and later Allied nuclear weapons research.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.