If Algorithms Guarantee Problem Solutions, Why Do People Ever Use

Multiple Choice

If algorithms guarantee problem solutions, why do people ever use heuristics, which do not?

A) Sometimes no algorithm is available to solve a particular problem.
B) Heuristics often require less time and effort to apply than do algorithms.
C) Heuristics produce successful problem solutions with sufficient frequency to justify their use.
D) People use heuristics for all these reasons.