Mixture here, so I can't pick any of the given choices. Players roll hit dice for their PCs, but if the result is lower than half for the given hit die, they get the half score instead. So if the roll on 1d8 is 1, 2, or 3, the character gets 4. Makes somewhat stronger PCs and prevents situations such as where the mage rolls really well and ends up having more hp than the badly-rolling barbarian.