Definition: You are given a question on econometrics. Econometrics is the application of statistical methods to economic data in order to give empirical content to economic relationships. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input: Consider the following sample autocorrelation estimates obtained using 250 data points:

1) Lag 1 2 3

2) Coefficient 0.2 -0.15 -0.1

3) Assuming that the coefficients are approximately normally distributed, which of the coefficients are statistically significant at the 5% level?
(A)1 only (B)1 and 2 only (C)1, 2 and 3 only (D)It is not possible to determine the statistical significance since no standard errors have been given

B