Given a prompt and four completions, select the completion that is the most plausible in continuing or answering the prompt. This task is designed to test common sense and has various categories ranging between idioms, negated statements, polysemy, subject referencing, and quantitative reasoning. Generate either Completion A, Completion B, Completion C, or Completion D.

Prompt: The web of lies spun by the worker became problematic when his boss discovered he wasn't telling the truth. The worker 
Completion A: attended spin class. 
Completion B: loved working on puzzles but always acted like he was the boss of other people working on the puzzle. 
Completion C: is a proponent of the free use of the World Wide Web and is an avid web developer. 
Completion D: stuck to his guns, pleading innocence.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Completion D