阅读下面短文，从每题所给的A、B、C、D四个选项中选出最佳选项。

    The Year of the Goat was a main reason for the low newborns in 2015, a report said.

    There were 16.55 million babies born in China last year, about 320,000 fewer than 2014, the Year of the Horse, it said. China began to allow couples where one partner was an only child to have a second child in late 2013, which made 11 million couples eligible (符合条件的).

    People expected the policy to result in 1 million more births compared with 2014. However, that did not happen. There is an old Chinese saying that 9 out of 10 people born in the Year of the Goat are unlucky in their lives.

    It was reported that the decline (下降) was mainly because of the Year of the Goat. China will likely welcome 17.5 to 21 million newborns yearly in the next five years.

    In 2015, the number of women aged 15 to 49, considered to be of childbearing age, fell by 5 million from 2014, In addition, the group between 20 and 29 years old, who are main childbearing people, has declined by 1.5 million, the report said.

Among babies born last year, the number of first children dropped by 850,000 from 2014, or 4.1 percent, it said. At the same time, the number of the second children increased by 450,000.

    The number of Chinese women of childbearing age reached the highest point in 2011 and then began to decline.