Susan threw a softball 42 yards on her first try and 51 1/2 yards on her second try.
 How much farther did she throw the softball on her second try than her first?
 Express your answer in feet and inches.
 A. 9 ft 1/2 in.
 B. 28 ft 1/2 in.
 C. 28 ft 6 in.
 D. 126 ft.