Find the average height of the paraboloid z = 8x-+4y above the annular region 4 x + y's9 in the xy-plane. O A. 52 B. 39 O C. 65 O D. 26Write an equivalent double integral with the order of integration reversed. In 3 3 [ [ By ex dy In 2 ey OA. 3 Inx OB. 3 Inx [ [ By dy dx [ Jay dy dx In 2 In 3 In 3 In 2 &C. 3 Inx OD. 3 Inx J J By dy ox [ S By dy ox 2 In 2 2 In 3