Read the following context and choose the best option to answer the question.
Context: It 's just a fucking dream . Yet as he thought it , he was not all that sure it was true . Whatever what happening in the recurring night - trip had to be unsettling or upsetting or something of the like to some degree , otherwise something so stupid would not be effecting him so strongly .
Question: Why is this person so shaken ?
Options: 
- None of the above choices .
 - The nightmare was very quick and short .
 - A nightmare has brought up bad memories .
 - The nightmare did not affect the man .


A nightmare has brought up bad memories .