How to punctuate correctly?

In an English class, an English professor wrote the words - 'A woman without her man is nothing' on the blackboard and asked his students to punctuate it correctly.

All the male students in the class wrote: 'A woman, without her man, is nothing'.

All the female students in the class wrote: 'A woman: without her, man is nothing'.

Punctuation can be powerful! huhu