Which of the following results from a hypothesis test involving the computation of a t-statistic is structured correctly based on standards for presenting hypothesis tests in scientific reports?

a. t(19) = 2.30, r² = 0.42, p < .05
b.t(19) = 2.30, p < .05, r2 = 0.42
c.r² = 0.42, t(19) = 2.30 , p < .05
d.t = 2.30, df = 19, p < .05, r² = 0.42