Dapolito: The city council recently passed a rent-control ordinance. But a recent study of fifteen local communities shows clearly that rent control increases the price and lowers the quality and availability of rental units. Thus, it can be concluded that it is not the city council's objective to preserve the quality and availability of local rentals. 18. Dapolito's conclusion follows logically if which one of the following is assumed? A The recent study of local rent-control ordinances was conducted by impartial investigators. B Rent control is not an appropriate topic for consideration by the city council. C The members of the city council who voted for rent control agree with the study's conclusions about rent control. D Some members of the city council who voted for rent control stand to profit from rent control. E The city council sometimes acts in an arbitrary and irrational manner.