Suppose the true proportion of people who use public transportation to get to work in the Washington, D.C., area is 0.45. In a simple random sample of 250 people who work in Washington, about how far do you expect the sample proportion to be from the true proportion?

(a) 0.4975

(c) 0.0315

(e) 0

(b) 0.2475

(d) 0.0009