A question about 'mobile mining':

I understand from the whitepaper that it is just a simulated mining and I imagine that the coins you get for your 'mobile mining' have to come from
(A) a pool of pre-mined coins or
(B) someone has to mine them with 'real mining' (as in generation of new blocks and adding them to the chain) and distribute them to the mobile miners.
Is it A or B?

In case of A, is it the pool of unsold coins "bonus pool" in the whitepaper? What happens if you sell all of the pre-mined coins in the ICO?

In case of B: Who is doing that job? For how long ...