Amusing question.
The first option makes sense (although it's wrong) as does the last (right) one.
But the two in between must be intended as a joke :w00t:. How can I separate 10 characters with a comma, I would need nine commas to do that (and the same applies to separating with "a" space). :laugh:
The scary thing is that 9% of answers have picked one or other of the two joke options. :crazy:
Tom