You generate the following regression results that were estimated from a sample size of 32, where tstatistics are reported in the parentheses: yt = 10.41 + 0.412 xt (12.13) (2.12) The xt variable is statistically significant at the: a. The 5% level, but not the 1% level b. The 10% level but not the 5% level c. At any level d. Not at any level