下面选项中t不是s的子序列的是()
A:s=<{2,4},{3,5,6},{8}>t=<{2},{3,6},{8}>
B:s=<{2,4},{3,5,6},{8}>t=<{2},{8}>
C:s=<{1,2},{3,4}>t=<{1},{2}>
D:s=<{2,4},{2,4}>t=<{2},{4}>
出自:项目数据分析师