A survey was given to a random sample of the residents of a town to determine whether they support a new plan to raise taxes in order to increase education spending. The percentage of people who said they favored the plan was 35%. The margin of error for the survey was 3%. Which of the following is a reasonable value for the actual percentage of the residents that support the tax plan?
a
37%
b
39.1%
c
31.4%
d
31.5%