请教一道语法题：GWD-23-Q38，谢谢

Drawing on her roots in a society that has a strong tradition of story-telling and oral renditions of the past, Indian writer Suniti Namjoshi incorporates many types of literature into her writing: including historical texts, legends, and even nursery rhymes from both Indian as well as European sources.

1. writing: including historical texts, legends, and even nursery rhymes from both Indian as well as

2. writing: historical texts, legends, and even nursery rhymes from both Indian and

3. writing: these include historical texts, legends, and even nursery rhymes from both Indian and

4. writing, which includes historical texts, legends, and even nursery rhymes both from Indian as well as

5. writing that includes historical texts, legends, and even nursery rhymes both from Indian and

这也是CD17－30，偶认为B是最好的，但系参考答案却是C，百思不得其解，那个冒号后面的these怎么看都有问题啊，为什么会是对的呢？谢谢大家了。。。

偶觉得这里就是列举啊，那个冒号不就是说明了后面就是many types of literature的内容了。C中的那个these就是指向types，其实有没有也是没有问题的啊，这属于不简洁吧

我这里的答案是B。

这里的考点到底是考查these的指代关系，还是句子简介原则？

正规使用中，是否有冒号后接列举事物的用法呢？