A student tries to draw △ABC with AB=6 cm, AC=6 cm and ∠B=40∘. She concludes that the triangle is uniquely determined by this data. Which one of the following statements best justifies whether her conclusion is correct?
(a) Her conclusion is correct because an isosceles triangle is always uniquely determined by the measure of its base angle.
(b) Her conclusion is correct because the data fits the AAS congruence criterion.
(c) Her conclusion is wrong because the given angle is not included between the given sides, so two different triangles can be drawn.
(d) Her conclusion is wrong because SSA never produces any triangle at all.