Only an expert in some branch of psychology could understand why Patrick is behaving irrationally. But no expert is certain of being able to solve someone else' s problem. Patrick wants to devise a solution to his own behavioral problem. Which one of the following conclusions can be validly drawn from the passage?
A: Patrick is not certain of being able to devise a solution to his own behavioral problem.
B: Unless Charles is an expert in some branch of psychology, Charles should not offer a solution to Patrick's behavioral problem.
C: If Charles is certain of being able to solve Patrick's behavioral problem, then Charles does not understand why Patrick is behaving in this way.
D: Patrick is not an expert in psychology.
Choose A, B, C or D as your solution.
C