PLZ HELP :(Which version of the sentence is most precise?

The principle upon which this company was founded is sound.
The company was founded upon a sound principle.
The company, which was founded upon a principle, is sound.
Soundness is a principle upon which this company was founded.

Respuesta :

The answer is the second one "the company was founded upon a sound principal."
I agree with the person above - the most correct sentence which is most precise is the second one: The company was founded upon a sound principle. 
The other sentences are longer and not precise enough.