问题如下图：
选项：
A. 
B. 
C. 
解释：
这个题目为什么不选5000呢，产品最终被卖掉的价格就应该是5000都计入GDP中啊，这里面没有重复加呀 不懂
NO.PZ2016010802000086 问题如下 Suppose a painting is proceansolin 2010 for £5,000. The expenses involvein procing the painting amounteto £2,000. Accorng to the sum-of-value-aemethoof calculating G, the value aethe finstep of creating the painting was: A.£2,000. B.£3,000. C.£5,000. B is correct.This is the value aethe artist: £5,000 – £2,000 = £3,000.考点G的计算解析本题比较常规，直接用最终产品的价值减去上一步商品的价值即可。£5,000 – £2,000 = £3,000. 啥呀这是，最终商品的价格不就已经算过了成本吗，为啥还要重复剔除？
NO.PZ2016010802000086 问题如下 Suppose a painting is proceansolin 2010 for £5,000. The expenses involvein procing the painting amounteto £2,000. Accorng to the sum-of-value-aemethoof calculating G, the value aethe finstep of creating the painting was: A.£2,000. B.£3,000. C.£5,000. B is correct.This is the value aethe artist: £5,000 – £2,000 = £3,000.考点G的计算解析本题比较常规，直接用最终产品的价值减去上一步商品的价值即可。£5,000 – £2,000 = £3,000. 5000-2000并不能表示为finstep of creating the painting，按照题意2000是painting生产的价格，3000是交易时的增加值，3000并不能算为finstep of creating
the sum of value a怎么也看不出来是附加值法啊
