Which of the following step was taken by the French in Vietnam to increase cultivation ?
i) It started building canals
ii) It started laying infrastructure projects
iii) Rail and port facilities were set up
iv) It started industrialization of IndoChina
A) Only (ii) and (iii)
B) Only (i) and (ii)
C) Only (i), (ii) and (iii)
D) All the mentioned above