Which hill described in the table is the steepest and why?
 Street
 Horizontal Distance (ft)
 Vertical Rise of Street (ft)
 Dixie Hill
 60
 20
 Bell Hill
 60
 40
 Liberty Hill
 60
 30
 A. Bell Hill; it rises two-thirds foot for every 1 foot of horizontal travel.
 B. Dixie Hill; it rises 1 foot for every 3 feet of horizontal travel.
 C. Bell Hill; it rises 3 feet for every 2 feet of horizontal travel.
 D. Liberty Hill; it rises 2 feet for every 1 foot of horizontal travel.