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A research firm conducts a sample survey and discovers that, of all the new watchers of three-dimensional TV, 77% have not reported any side effects such as vertigo, headache, or undue eyestrain compared with watching regular television. If this sample questionnaire had 2,100 respondents, what is the margin of error (ME), rounded to the nearest thousandth?
A ME = ±0.009
B ME = ±0.017
C ME = ±0.018
D ME = ±1.837
