The Harris-Todaro model has all of the following features EXCEPT A. migration is driven by actual rural-urban earnings differentials. B. high rates of migration is the result of urban-rural imbalances. C. the urban areas in developing countries are beset by unemployment problems and rural migrants may not find high-paying formal sector jobs immediately after migration. D. the probability that rural migrants may find high-paying urban formal sector jobs is related to the actual unemployment level in the urban areas .