[TriLUG] Silly Survey about a dash or a minus in a command line option

[John Vaughters]

Hey all, I am in a training class and the instructer asked what is best way to describe the minus character in a command line option. I gave him my answer, but it made me think of all the conversations I have had and I am not sure which is used most, so I would like to ask this group.
 
ls -la
 
So is that a (dash)la?
Or a (minus)la?
 
A simple response with a dash or minus would be great.
 
Thanks in advance for your help in resolving the critical technicality.
 
My vote is dash
 
John Vaughters