The **Wiseman-Peacock Hypothesis** explains the growth of public expenditure as a result of a 'displacement effect.' What does this effect refer to?
APublic expenditure decreasing due to a reduction in social unrest.
BA temporary increase in public expenditure during social disturbances, followed by a return to the original level.
CPublic expenditure remaining unchanged regardless of social disturbances.
DA rise in public expenditure and a new, higher tax tolerance level following a social disturbance.