Questão 669613: If applied to the text, which ones would be correct and k...

If applied to the text, which ones would be correct and keep the literal meaning? 



Texto associado.
Consider the following propositions for rephrasing the fragment of sentence the south tower after burning for an hour and two minutes (l. 06-07). 
 I - the south tower after having been burning for an hour and two minutes
 II - the south tower after it was burning for an hour and two minutes
 III- the south tower after it had been burning for an hour and two minutes
If applied to the text, which ones would be correct and keep the literal meaning?