Use the following statements to write a compound statement for the conjunction or disjunction. then find its truth value. p: an isosceles triangle has two congruent sides. q: a right angle measures 90°. r: four points are always coplanar. s: a decagon has 12 sides. p∨q select one: a. an isosceles triangle has two congruent sides and a right angle measures 90°; true. b. an isosceles triangle has two congruent sides or a right angle measures 90°; true. c. an isosceles triangle has two congruent sides or four points are always coplanar; true. d. an isosceles triangle has two congruent sides or a right angle measures 90°; false.