【单选题】

Questions 29 and 30 are based on the following news.At the end of the news item, you will be given 10 seconds to answer the questions. Now, listen to the news.

What’s the meaning of this sentence "In the past Washington has cited inaction byChina as a reason for not making ambitious commitments of its own to reduce greenhouse gases"A．China accused the U. S. for not taking actions.
B．The U. S. accusedChina for not taking actions.
China accused the U. S. for not making ambitious commitments to reduce greenhouse gases.
D．China says its reason for not making ambitious commitments to reduce greenhouse gases is the U. S.