Which set of numbers is ordered from least to greatest?
a. 10, -8, -5, 32, 32, 35, 50
b.50, 35, 32, 32, 10, -5, -8
c.-8, -5, 10, 32, 32, 35, 50
d.-5, -8, 10, 32, 32, 35, 50