A regression model, y = 4 + 4x1 + 6x2, with the undernoted parameters. Parameters: R2= 0.88 Sig of F: 0.04 p-value of x1= 0.05 p-value of x2= 0.08 a. Should NOT be rejected because all the parameters are generally acceptable. b. Should be rejected because the Sig of F: 0.04 is not high enough to be generally acceptable (95% or more) as a measure of confidence in the R2 . (1 - sig of F = Confidence Level) c. Should be rejected because the p-value of x2= 0.08 is not high enough to be generally acceptable (95% or more) (1- p = confidence level) d. Should be rejected because the R2 is very low