Which statements about alcohol acidity are correct?

1. AIn the gas phase, tert-butyl alcohol is more acidic than methanol because the larger alkyl groups stabilise the alkoxide by polarisation.
2. BIn water, methanol is more acidic than tert-butyl alcohol because the bulky alkoxide is less well solvated.
3. CThe reversal of order between gas phase and water arises because the $+I$ effect of alkyl groups disappears in water.
4. DIn the gas phase, water is more acidic than methanol.