1.Suppose the sides of a triangle form a geometric progression with common ratio r. Then r lies in the intervala.(0, (-1+sqrt(5))/2]b.((1+sqrt(5))/2, (2+sqrt(5))/2]c.((-1+sqrt(5))/2, (1+sqrt(5))/2]d.((2+sqrt(5))/2, infinity)Login to continueOnly logged in users canattempt or see the solution.