+1 @stepharizona
To solidify ... 10 As, lets say that 6 of them (most) are C ... (so we have 6 AC, and 4 separate As ... 10 Bs, lets say that 6 of them (most) are C ... most B (so, we have 6 AB and 4 separate Bs ... C (so, we have 6 AC, and 4 separate Cs ...