Briefly state, with reasons, the type of chart which would best convey in each of the following:

(i) A country’s total import of cigarettes by source. (1 mark)

(ii) Students in higher education classified by age. (1 mark)

(iii) Number of students registered for secondary school in year 2019, 2020 and 2021 for areas X, Y, and Z of a country. (1 mark)