grammar - Grammatical usage of prepositions: before or after "not only ....but also...."

Which one is more universal, before or after "not only...but also..."?

I saw a sentence in an article:

...masters were responsible not only for teaching their apprentices
a trade but also for providing them some education...

But I thought omitting the second "for" would be fine:

...masters were responsible for not only teaching their apprentices
a trade but also providing them some education...