A clear increase in the incidence rate of mCP stars with increasing mass was identified in Paper I (mCP stars account for ≈ 3 per cent of MS stars with M ≈ 1.5 M and ≈ 10 per cent of MS stars with 3.0 < M/M < 3.8). The Monte Carlo simulation involving the Zorec & Royer (2012) **data** did not reveal an increase in Bc with decreasing M , which might have otherwise explained the increased rarity of lower mass mCP stars. We conclude that, regardless of whether Bc exists, this particular property of mCP stars is likely a product of additional factors such as the increase in subsurface convection zone depth with decreasing mass.