GMAT Sentence Correction (SC) | Re: The Emperor Augustus, it appears, commissioned an idealized

I am very much confused about option E being wrong.In fact option A and E both seem correct to me."so as to" can be used even if the actors in the main caluse and subordinate clauses are different.
may be this blog my Mike M???Garry could help.
https://magoosh.com/gmat/2012/so-lets-talk-about-so/
please help