Analyze the following statements about the sentence “The fir...

Analyze the following statements about the sentence “The fire spread quickly, but fortunately everyone was able to escape”:

I. We can replace “was able to escape” with “managed to escape”.

II. We can replace “was able to escape” with “could escape”.

III. We can replace “was able” with “succeded in” followed by “escaping”.

Which ones are correct?