I Describe a test for symmetry with respect. to the line 9 = E in which r is not replaced. Chome the correct answer below, 0 A I It [r,9) is replaced by (r, 9} and the equation is equivalent, then the graph is symmetric with respect to the line (-1 = 3 because of the identies sin ( B) = - sin 3 and cos { - 9): cos B. O B' I 1: TI: 11 It [r,9) is replaced by r3 (-1 and the equation is equivalent, then the graph is symmetn'c with respect to the line 9: E because of the identities sin 5 - I} = sin (-1 and cos i 9 = cos 9. O C I It [r,9) is replaced by (mt 8) and the equation is equivalent, then the graph is symmetric with respect to the line (-1 = 3 because of the identities sin (I 9) = sin 9 and cos [I B] = cos 9. 0 Dr I It (t?) is replaced by (mt-t 9) and the equation is equivalent, then the graph is symmetric with respect to the line B = because of the identities sin (I + 9) = sin 9 and cos [I + B] = cos B. 2