A.153.6>76.8>38.4; B.153.6<76.8<38.4; C.9.6>19.2>38.4; D.以上說法都不對
A.1/2>7/8>5/4; B.1/2<7/8<5/4; C.1/2>5/4>7/8; D.以上說法都不對