One year ago, B achieved a prototyp

One year ago, B achieved a prototype of data access server. B persuaded A:"My access server is very good and has good future. If you help to develop it into network management software, we can cooperate and make money together." D is also interested in it, he said to A and B:"If you can develop the data access server and network management software, I'll sale it to clients. Let's make money together."A thought it's a great opportunity, so A applied the project to C. C approved it. Then, A outsourced the development project to software company E. The target software system is expected to be available in half a year. Because access server is developed by B, A and E sent persons to B to gather requirements. B's access server is not mature and always changes. So A, B and E took one year and a lot of trouble to complete the network management software based on B's access server.E delivered it to A; and A paid E. Then, A forwarded it to D, D tried to sell it to client F (a telecommunications office). But F told D:"Your network management software is not what we need. We would pay only after you make the software good enough."D immediately told A:"I tried to sell it, but the client is not satisfied with it. Please try to improve it as quickly as possible; otherwise we won't make any money."A is very angry and complained:"We have been working so hard for one year and spent a lot of money. But the product is not accepted by clients. It is unfair!"What is worse, C laid up trouble for A:"Your project has delayed for more than half a year and you've spent all the fund. You must terminate the project immediately."Manager of A worried about it every day.