someone help before i die o-o

Which of these is a valid conclusion?

All farmers wear straw hats.
My father wears a straw hat.
Therefore, my father is a farmer.

All farmers wear straw hats.
My father does not wear a straw hat.
Therefore, my father is a farmer.

All farmers wear straw hats.
My father is not a farmer.
Therefore, my father wears a straw hat.

All farmers wear straw hats.
My father is a farmer.
Therefore, my father wears a straw hat.

Question

someone help before i die o-o

Which of these is a valid conclusion?

All farmers wear straw hats. 
My father wears a straw hat. 
Therefore, my father is a farmer.

All farmers wear straw hats. 
My father does not wear a straw hat. 
Therefore, my father is a farmer.
 
All farmers wear straw hats. 
My father is not a farmer. 
Therefore, my father wears a straw hat.
 
All farmers wear straw hats. 
My father is a farmer. 
Therefore, my father wears a straw hat.

nnesha · Answer

math section o^_^o :P

godlovesme · Answer

wait i accidentally closed the question :O

nnesha · Answer

ohh is it math ?

godlovesme · Answer

LOL @Nnesha  u needa chocolate or nah? u sound confused ;P

nnesha · Answer

yeah 
this is math section

godlovesme · Answer

yepp :3 but can u help me pweeeaaseeeee

nnesha · Answer

sorry idk :(

godlovesme · Answer

awh :( ish fine thanks though :)