求助各位大神一道OG2017的题

chase0810

The Organization of Petroleum Exporting Countries (OPEC) had long been expected to announce a reduction in output to bolster sagging oil prices, but officials of the organization just recently announced that the group will pare daily production by 1.5 million barrels by the beginning of next year, but only if non-OPEC nations, including Norway, Mexico, and Russia, were to trim output by a total of 500,000 barrels a day

A.        year, but only if non-OPEC nations, including Norway, Mexico, and Russia, were to trim output
B.        year, but only if the output of non-OPEC nations, which includes Norway, Mexico, and Russia, is trimmed
C.        year only if the output of non-OPEC nations, including Norway, Mexico, and Russia, would be trimmed
D.        year only if non-OPEC nations, which includes Norway, Mexico, and Russia, were trimming output
E.        year only if non-OPEC nations, including Norway, Mexico, and Russia, trim output
这道题关于答案我没有问题，我的问题是原文中先写的“the organization just recently announced that”，这是一个过去时的句子，那后面为什么要用“will pare”这种表达？不是说如果主句用的是过去时，从句中的将来时就要写成would吗？？一直不理解这里的will，新人上路~求各位大神解答！！非常感谢~~