I've done the math numerous times but I can't seem to find the right answer. I know it isn't A

Exercise 8-9 Consider the following model that explains childbirth weight in terms of various factors: bwght = Bo + B,cigs + Byparity + Byfaminc + B,mothedcu+ By fatheduc + u, (1) where bwght is the birth weight in pounds, cigs is the average number of cigarettes the mother smoked per day during pregnancy, parity is the birth order of this child, famine is annual family income, motheduc is years of schooling for the mother, and fatheduc is years of schooling for the father. Suppose that we want to test' the claim that parents' education has no effect on birth weight, using a sample of 800 observations. The R-squares for the two models are .0258 and 0287. Which of the following statements is false? (a) It has to be the case that R? =.0287 and R,2 =.0258. (b) That motheduc and fatheduc are jointly insignificant in the birth weight equation at the 1% significance level. I (c) That motheduc and fatheduc are jointly insignificant in the birth weight equation at the 5% significance level. (d) We use an F statistic to test this. (e) None of the above