Which statement below is the central idea of the article “Little Emperors: China’s One-Child Policy”? (A) China’s One-Child Policy has been very successful at curbing the population problem.

(B) China’s One-Child Policy was enforced to curb the problem of overpopulation.

(C) China’s One-Child Policy has been in effect for too many years.

(D) China’s One-Child Policy was recently changed to a Two-Child Policy.