In a regression with the following least squares results, which of the following is true? Standard Coefficients Error t Stat P-value Intercept -4.326 1.924 -2.249 0.046 X Variable 0.665 0.391 1.701 0.061 O a. The slope coefficient is significantly different from zero at 10% significance level. O b. The intercept coefficient is significantly different from zero at 1% significance level. O C. The intercept coefficient is not significantly different from zero at 5% significance level. O d. The slope coefficient is significantly different from zero at 5% significance level