PLEASE HELP!
Which transformations will produce similar, but not congruent, figures?

​ A)Triangle MNO ​ is reflected across the y-axis and then rotated 180° clockwise to form ​ triangle M"N"O" ​ .

​ B)Triangle MNO ​ is reflected across the y-axis and then dilated by a scale factor of 1.8 to form ​ triangle M"N"O" ​ .

C)​ Triangle MNO ​ is reflected across the x-axis and then translated 9 units down to form ​ triangle M"N"O" ​ .

D)Triangle MNO is reflected across the x-axis and then rotated 90° clockwise to form triangle M"N"O" .