Which statement is probably TRUE according to the information in the paragraph 1?
A. In 2017, the elderly take up for one third of the total population, this leads to more concerns about healthcare, welfare and pensions for the elderly.
B. In 2015, the two-child policy has been officially tightened and succeeded.
C. The government would promote families to have two children to compensate for the ageing population within the next 20 years.
D. In the next 15-17 years, Vietnam's economy will need a large labor force to integrate with global economy.