We think the firm may be able to supply you with more quotations

We think the firm may be able to supply you with more quotations for a wider range of machines, the knitting machines you requested ____.
A、include
B、including
C、included
D、to include
【正确答案】：C
【题目解析】：过去分词作后置定语句意：我方认为本公司可以向贵方提供更多种类的机器的报价，其中包括贵方所要求的针织机。