Identify the APA style formatting error in the citation at the end of this sentence: A mental health crisis is "a period of psychological disequilibrium, experienced as a result of a hazardous event or situation that constitutes a significant problem that cannot be remedied by using familiar coping strategies" (Roberts et al., 2021). The citation is missing a page number. O The citation is missing the initials of the author. All of the authors should be listed in the citation. O There should not be a comma after et al.