NO.PZ2018101501000100
问题如下：
Company M, a steel manufacturer, expects to purchase an iron ore mining company, which is an example of a:
选项：
A.horizontal merger
B.forward integration
C.backward integration
解释：
C is correct.
考点：Categorize Merger and Acquisition Activities
解析：处于同一产业链中的两家企业发生并购，比如向上游并购供应商或者向下游并购经销商都属于垂直并购，钢铁生产商向上游并购铁矿石采矿公司是backward integration。
讲义上写的horizontal, vertical, coglomerate merger,请问backwardation 是否是另一个分类？讲义上没提到呀
