答案及解析：[单选题]On an initially empty vector, what's the result of executing insert(0, 2), insert(1, 6), put(0, - 工学类题库- 答案窝(daanwo.com)-大学生作业答案及考资分享平台

问题：

[单选题]On an initially empty vector, what's the result of executing insert(0, 2), insert(1, 6), put(0, 1), remove(1) and insert(0, 7):在一个初始为空的向量上依次执行：insert(0, 2), insert(1, 6), put(0, 1), remove(1), insert(0, 7) 后的结果是：
A{6, 2, 7}
B2, 6, 0, 7}
C{7, 1}
D{2, 1, 7}