15. [2 pt] Which of the following best interprets the coefficients in Model A? (a) For each additional increase in attendance, the revenue of the concert increases on average by $57.12. (b) The p-value of attendance variable is less than 0.01. There is not enough evidence to infer that there is a linear relationship between attendance and revenue. (c) The intercept is -$6,225.48, which means one would lose money unless attendance is considered in the regression. (d) The t-stat of intercept is -0.0259. Therefore, there is sufficient evidence to support that intercept is significantly different than zero