Several stores are having sales. The prices are reduced by 62.5%, 2/3, 75%, 1/2, and 7/10. Which list shows the price reductions from greatest to least?
a) 75%, 62.5%, 1/2, 2/3, 7/10
b) 75%, 7/10, 2/3, 62.5%, 1/2
c) 75%, 7/10, 62.5%, 1/2, 2/3
d) 75%, 7/10, 62.5%, 2/3, 1/2