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【单选题】
如果：消费额= 6亿元，投资额= 1亿元，间接税= 1亿元，政府用于商品和劳务的支出额= 1．5亿元，出口额= 2亿元，进口额= 1．8亿元，则( )
A.
NDP = 8 ． 7 亿元
B.
GDP = 7 ． 7 亿元
C.
GDP = 8 ． 7 亿元
D.
NDP = 5 亿元
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