Consider the following two sentences:
(a) The planning graph data structure can be used to give a better heuristic for a planning
problem.
(b) Dropping negative effects from every action schema in a planning problem results in a
relaxed problem.
1
Both sentence (a) and sentence (b) are false.
2
Both sentence (a) and sentence (b) are true.
3
Sentence (a) is true but sentence (b) is false.
4
Sentence (a) is false but sentence (b) is true.