一道逻辑题 求助

nicholas81

Transnational cooperation among companies is experiencing a modest recovery among United States firms, even thogh projects undertaken by one more companies under a collaborative agreement are less profitable than projects undertaken by a single company. The advantage of transnational cooperation is that such joint international projects may allow U.S. firms to win foreign contracts that they would not otherwise be able to win.
Which of the following is information provided by the passage?
A Transnational cooperation involves projects too big for a single corporation to handle.
B Transnational cooperation results in a pooling of resources leading to high-quality performance
C Transnational cooperation has in the past been both more common and less common than it is now among United States firms.
答案是C  实在不明白~  我觉得AB 都可能是对的吧··  求解啊~什么叫做more common and less common 啊？？

nicholas81

没人理~顶一下～

nicholas81

各位大神帮帮忙啊

nicholas81

顶顶顶

ninamikou

注意有个词叫“recovery"
说明以前有好有坏
所以选C ：）