During half way to the project execution，you were assigned as a project manager．After careful reviewing of the project，you found that the project might take double the time that the previous manager estimated．However，the upper management has been told that the project is on schedule．The previous manager is an old friend of yours，what will you do ？（）

A．Report your evaluation to the upper managemen

B．Have a team meeting to find the alternatives to meet the project schedul

C．Meet the previous project manager and turn the project bac

D．Execute the project as planned by the previous manage

1972年，美国长期国债期货期权合约在芝加哥期货交易所上市，引发了期货交易又一场革命。（）