Here’s the answer to your question.
OTC Markets reports the A/S and O/S for shares that trade. Only A shares can trade. There is only a market for A shares. That’s what OTC markets reports.
There is no market for B shares. B shares don’t trade. If a B share holder wants to trade, he must convert his shares to A shares. That’s not going to happen because B shares are all held by the Board of Directors.
There is no market for C shares. C shares can be converted to A shares over time. The timetable is laid out in the proxy related to C shares.
As you can see, nothing trades except A shares. If the B or C shares were converted, then OTC Markets would report them.
Preferred shares are irrelevant at this point because there no OS preferred shares. Why anybody is talking about preferred shares at this point, I don’t know.