阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
Mainland couples who give birth to a second child in Hong Kong will be fined for breaking the family planning policy，a senior official has warned．
As more women flock to Hong Kong to give birth to their second child，Zhang Feng，family planning department director of Guangdong Province，stressed that this violated China's policies．
