Critical Reasoning (CR) | Re: Scientists typically do their most creative work before the

I went through all the posts on this questions, but did not find valuable explanation why E is the correct answer.
For me it should be D.

Agrument favors: commonly thought that age brings loss of creativity. So lower creativity beyong 40
Argument against: Most highly creative scientists beyond 40 entered their field older than usual (Age does not affect creativity)--------BF1
Agrument favors: High creativity beyond 40 is due to the time spent on the field (Not because of age)------------------------------------BF2

Answer