找考题网-背景图
单项选择题

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}>