Why Might a Politician Start a Costly Spending Program If

Why might a politician start a costly spending program if its costs exceed its social benefits?

A) The politician is trying to find ways to raise more money for the next election.
B) The politician gains prestige and voters are not well informed of the benefits and costs.
C) Voters do not care about the costs of programs, as long as their taxes do not go up.
D) The costs cannot be measured therefore the politicians focus on the benefits which are explicit.