When Would Libertarianism Justify Government Intervention in the Redistribution of Income

When would libertarianism justify government intervention in the redistribution of income

A) if an egalitarian distribution of income is inconsistent with market outcomes
B) if the income distribution is altered by illegal means (e.g., theft)
C) if a social planner is needed to smooth out the transitory income stream
D) if workers lose their jobs as a result of structural changes in the economy