根据表一Is that your jacket in the lost and found case?It's blue and white.If it is yours,you can ask the teacher for it.(失物招领箱里的夹克是你的吗?它是蓝色和白色的。如果是你的,你可以向老师要。)可知,露西丢了夹克。选项A正确,故选A。