Read the following context and choose the best option to answer the question.
Context: The only mistake was that I did n't have my high beams on . I had turned them off when I passed another car and had forgotten to turn them back on . That could have bought me another millisecond .
Question: What may be the reason for the outcome ?
Options: 
- Their high beams were too bright .
 - Their high beams were too dim .
 - None of the above choices .
 - It was too dark for them to see .


It was too dark for them to see .