Based on surveys of random samples from people in a town, the proportion of people interested in a new chain restaurant opening in their town is 0.42 with a standard deviation of 0.07. Which of these intervals is the smallest that likely contains 95% of the sample proportions?

A:

0.21 to 0.63

B:

0.28 to 0.56

C:

0.35 to 0.49

D:

0.41 to 0.43