[单选题]According to the mean-variance criterion, which one of the following investments dominates all others? ()Gsa答案窝(daanwo.com)-大学生作业答案及考资分享平台 AE(r) = 0.15; Variance = 0.20Gsa答案窝(daanwo.com)-大学生作业答案及考资分享平台 BE(r) = 0.10; Variance = 0.20Gsa答案窝(daanwo.com)-大学生作业答案及考资分享平台 CE(r) = 0.10; Variance = 0.25Gsa答案窝(daanwo.com)-大学生作业答案及考资分享平台 DE(r) = 0.15; Variance = 0.25Gsa答案窝(daanwo.com)-大学生作业答案及考资分享平台 ENone of these options dominates the other alternatives.