As part of the Plan Risk Management process, a project manager is looking at the activity of preparing a risk management plan. Which of the following is true about risks?
A. A risk may have one or more causes and, if it occurs, may have one or more impacts.
B. A risk usually has a single cause and, if it occurs, may have one or more impacts.
C. A risk usually has a single cause and if it occurs usually has a single impact.
D. A risk usually has more than one cause, and if it occurs, may have one or more impacts.