The Mean Test Scores for Three Groups Are 22

The mean test scores for three groups are 22.35, 25.75, and 30.35. The researcher examines these scores using ANOVA; results are F = 3.16 (2, 57) , p = 0.04. Based on these results, the researcher can conclude

A) there is a difference in the mean scores for these three groups.
B) there is no difference in the mean scores for these three groups.
C) groups 1 and 2 are significantly different from group 3.