Conditional: If a triangle is scalene, then the triangle has no congruent sides.Which statement shows the conditional written as a true biconditional?If a triangle has some congruent sides, then the triangle is not scalene. If a triangle has no congruent sides,then the triangle is scalene.A triangle is scalene if and only if it has no congruent sides.A triangle is equilateral if and only if it is not scalene.