Ａ驾驶一辆客运汽车在乡村公路上正常行驶，车轮弹起一个石子将在马路边正常行走的Ｂ头部击伤，致Ｂ引发精神病，Ｂ因此向人民法院提起诉讼。经审理查明，Ａ既是驾驶员又是车主，Ａ与Ｂ均未违反交通规则。在审理过程中，对车轮弹起的石子伤人责任如何认定及引用什么法律条... A driving a passenger car traveling normally on a country road, the wheel bouncing a stone to injure head B of the normal walking on the road, causing mental illness and causing a lawsuit to the people’s court. After the trial found that A is both a driver and a car owner, A and B did not violate traffic rules. In the trial process, how to identify and cite what law responsibility for the wounding of the stone on the wheels ...