Managing risks and documenting them is very important in project planning process．You are in the process of defining key risks，including constraints and assumptions，and planned responses and contingencies(where appropriate)．These details will be included in the______(choose the best answer)．

A．project management plan

B．project baseline

C．risk response plan

D．risk baseline

若，则以a、b的值分别为：（）

A.a=-3，b=0

B.a=0，b=-2

C.a=-1，b=0

D.以上都不对