Which of the following has occurred for Australia since 1960?

Which of the following has occurred for Australia since 1960?

Select one:

a. The ratio of exports to GDP has increased while the ratio of imports to GDP has decreased.

b. The ratio of exports to GDP has decreased and the ratio of imports to GDP has increased.

c. The ratio of exports to GDP and the ratio of imports to GDP have both increased.

d. The ratio of exports to GDP and the ratio of imports to GDP have stayed relatively constant.

e. The ratio of exports to GDP has decreased and the ratio of imports to GDP has decreased.