In a poll of 125 randomly selected students, it showed that 60% of the respondents believe in global warming. Based on the sample results n = 125 and p = 0.60, the margin of error E that corresponds to a 90% confidence level is equal to (Given that zα/2 = 1.64).
a. 0.06971
b. 0.07186
c. 0.07382
d. 0.07286