The graph above shows the population of Brazil's largest cities. According to the graph, how does Brazil's third-largest city compare with its second-largest city?
A.
The third-largest city is about one-third the size of the second-largest city.
B.
The third-largest city is about one-half the size of the second-largest city.
C.
The third-largest city is about two-thirds the size of the second-largest city.
D.
The third-largest city is about three-fourths the size of the second-largest city.