I've noticed a lot of native speakers struggle to use the indirect forms, in that they stick to the incorrect inversed structure when forming a simple informative sentence. For instance, while listening to an online course on social media marketing, the lecturer would ceaselessly form his sentences as follows:
What we have to do is realise who are the customers we're trying to reach out to.
While he should've said:
What we have to do is realise who the customers we're trying to reach are.
This syntax though led me to another question: where should I put the verb in more complex sentences? If I were to state the following, should I say it as A) or rather as B)?
A) What we don't know yet is how many kids there are who regularly skip classes.
B) What we don't know yet is how many kids who regularly skip classes there are.
The bottom line is that I'm a tad worried about putting the verb so far away from the subject. But is it really wrong? Or are both options viable?