An Opinion Poll Was Conducted Among a Group of Registered

An opinion poll was conducted among a group of registered voters in a certain state concerning a proposition aimed at limiting state and local taxes. Results of the poll indicated that 31% of the voters favored the proposition, 37% were against it, and the remaining group were undecided. If the results of the poll are assumed to be representative of the opinions of the state's electorate, what is the probability that a registered voter selected at random from the electorate is undecided about the proposition?

A) 0.26
B) 0.28
C) 0.30
D) 0.32
E) 0.24