What Is the Difference Between a Well-Defined and an Ill-Defined

Multiple Choice

What is the difference between a well-defined and an ill-defined problem?

A) In a well-defined problem, the process to achieve the goal is immediately apparent.
B) In an ill-defined problem, the start state, goal state, or process to achieve the goal is unclear.
C) In an ill-defined problem, the goal state cannot be determined.
D) Only well-defined problems have a start state and a goal state.