There are more than two possible answers.
And arguing that there are only two possible answers is the false dilema that you continue to push.
"We don't know yet", or "we don't fully understand it yet."
There's your actual answer.
Not knowing or not understanding at this point does not mean that there is a Higher Power involved; insanity was thought to be demonic possession until we were able to understand what it truly was.
Man could not fly until he both understood the dynamics of flight, and the technology was available.
There is also the possibility of both "A" (evolution) and "B" (Creation) being right.
So you would have no problem teaching id along side of evolution?