keep it simple
Like a few people noticed, not in so many words, this is a nice academic question. Let's treat it academically and hence:
1. everything takes place in a wind tunnel
2. the model is bolted at fixed attitude
Now, we can all answer the question, and (me thinks) agree with Old Smokey.
Cheers,
(Just Balsa Models).
PS: Do all slats extend & droop the leading edge?