A Test Is Conducted to Compare Three Difference Income Tax

A test is conducted to compare three difference income tax software packages to determine whether there is any difference in the average time it takes to prepare income tax returns using the three different software packages.Ten different people's income tax returns are done by each of the three software packages and the time is recorded for each.Given this format and testing using an alpha level equal to 0.05,the critical value associated with the primary hypothesis test is:

A) 3.555.
B) 2.456.
C) 19.385.
D) 4.256.