[单选] Which item is correct？ 下面哪个描述是正确的 a． LE target is defined with MFG and ME in plant based on experience LE 指标是我们跟厂里生产工程一起根据以往经验定义出的 " b． LE target is calculated by LE model based on actual volumeLE 指标是根据 LE model按照实际生产的产量计算得出的" c． LE target is calculated by LE model based on MSD designed volumeLE 指标是根据 LE model按照MSD设计的产量计算得出的" d． LE target is provide by plant， because the plant be held accountable for meeting to the targetLE 指标是工厂提供的 ，将来达到目标也是工厂做出来的"