Critical Reasoning

a poll has revealed that 95% of the residents of essex county believe that the way to reduce violent crime is to build larger maximum-security prisons. when a referendum for the construction of a maximum-security prison in essex country was added to the ballot the following november, however, the proposal was voted down by a three-to-one margin.

which of the following, if true, forms the best basis for at least a partial explanation of the apparent discrepancy described above?

1. the threat of a life sentence in a maximum-security prison has been shown to be an adequate deterrent of violent crime.
2. the prison would have been constructed by a private company, and it would have been impossible for the county government to oversee the company's finances.
3. fewer than half of the registered voters in essex county voted.
4. much of the substantial cost of the prison could have been offset by increasing the tolls required to cross the bridge over nearby lake essex.
5. maximum-security prisons are a boon to the overall well-being of the state, but they also pose a considerable risk in the areas in which they are located.

[spoiler]OA : E, i feel D is also a strong contender (is it "could" in statement that makes is less preferable than E [/spoiler]