Confidence interval consistent with rejection of the null

Consider a normal population with unknown mean $\mu$ and variance $\sigma^2=9$. To test $H_0:\mu=0$ against $H_1:\mu\ne0$, a random sample of size $100$ is taken. Based on this sample, the test of the form $|\overline X_n|>K$ rejects the null hypothesis at $5\%$ level of significance. Then, which of the following is a possible $95\%$ confidence interval for $\mu$?