If the proposition ‘domestic animals are hardly ferocious’ is taken to be false, which of the following proposition/propositions can be claimed to be certainly true? Select the correct code: 
Prepositions: 
1) All domestic animals are ferocious. 
2) Most of the domestic animals are ferocious. 
3) No domestic animal is ferocious. 
4) Some domestic animals are non-ferocious. 
Code: