Find the value of xxx in the isosceles triangle shown below. Choose 1 answer: Choose 1 answer: (Choice A) A x = 20x=20x, equals, 20 (Choice B) B x = 7x=7x, equals, 7 (Choice C) C x=\sqrt{52}x= 52 ​ x, equals, square root of, 52, end square root (Choice D) D x = \sqrt{40}x= 40 ​ x, equals, square root of, 40, end square root