A research study conducted a one-factor ANOVA test with sample sizes n1=6, n2=6, n3=6, and n4=6. Additionally, the study informs you that the test results showed that within group sum of squares variation was 325.0202 and your total sum of squares variation was 445.8907. The level of significance chosen for the test was .10. The calculated test statistic is?

a) 2.23

b) .371

c) 2.69

d) 2.48