方框里面的数字啥意思是，怎么判断哪种方式对谁最好

问题如下：

SigmaSoft and ThetaTech are the dominant makers of computer system software. The market has two components: a large mass-market component in which demand is price sensitive, and a smaller performance-oriented component in which demand is much less price sensitive. SigmaSoft's product is considered to be technically superior. Each company can choose one of two strategies:

• Open architecture (Open): Mass market focus allowing other software venders to develop products for its platform.Ÿ
• Proprietary (Prop): Allow only its own software applications to run on its platform. Depending upon the strategy each company selects, their profits would

The Nash equilibrium for these companies is:

选项：

A.proprietary for SigmaSoft and proprietary for ThetaTech. B.open architecture for SigmaSoft and proprietary for ThetaTech. C.proprietary for SigmaSoft and open architecture for ThetaTech.

解释：

In the Nash model, each company considers the other's reaction in selecting its strategy. In equilibrium, neither company has an incentive to change its strategy. ThetaTech is better off with open architecture regardless of what SigmaSoft decides. Given this choice, SigmaSoft is better off with a proprietary platform. Neither company will change its decision unilaterally.

中文解析：

在纳什模型中，每个公司在选择战略时都会考虑对方的反应。在均衡状态下，两家公司都没有改变战略的动机。无论SigmaSoft如何决定，开放架构对ThetaTech来说都是更好的。考虑到这个选择，SigmaSoft最好使用专有平台。两家公司都不会单方面改变其决定。