What effect does your result in$($b$)$ have on the validity of the results in$($a$)?$

A$.$

It makes the results in part$($a$)$ less reliable because large differences in the group variances do not have much effect on the level of significance or the power of the F test.

B$.$

It makes the result in part$($a$)$

lessless

reliable because large differences in the group variances can seriously affect the validity of the F test.

C$.$

It makes the result in part$($a$)$

moremore

reliable because large differences in the group variances can seriously affect the validity of the F test.

D$.$

It does not affect the validity of the results in part$($a$)$ because the F test does not require the different populations to have equal variances.