Upon judicial review in which the standard of correctness is used, the reviewing court must be of the opinion that it was absolutely the correct decision and that there were no other potentially reasonable decisions that could have been made. It is the exact same decision that a court would have made in the same situation.
Generally, the standard of reasonableness, in a situation in which a decision is made based on all of the facts, is whether the information available to the minister would have allowed for this decision to be considered reasonable in the given situation.