在一个软件开发项目中，开发人员发现一个可以提高速度的新工具。项目经理分析发现这种新工具能够缩短当前开发阶段20%的时间，并节省10%的项目成本。在变更控制委员会批准之后，项目经理修订了项目进度。这属于哪种风险应对类型？
During a software development project, a developer discovers a new tool that could increase development speed. The project manager’s analysis finds implementing the new tool could shorten the current development phase by 20% and save 10% of the project’s cost. After approval from the change control board, the project manager revises the project schedule. What is the type of risk response?
A ： 开拓 Exploit
B ：接受 Accept
C ：增强 Enhance
D ：转移 Transfer
先自己做一做，答案和解析见下一页。