which of the following statements are true?

O A. The equations x2 + y2 = 9, and r = 3 (0 S t $ 2n) have the same graph O B. The graph of the curve r = sin(30) has 6 loops in the interval O $ 0 $ 2 It O C. There is a horizontal tangent line to the curve r = 1 - sin(0 ) when of= O D. b The area enclosed by the curve r=f (0) . as0 sb. isA_ de a DE The length of the curve r = f(0), a s 0s b. "s L= sosb.54 - J 2 - ( ) de ris a diferentiable function of A O F. There is a horizontal tangent line to the curve = 1 - sin(() when o = 2