X along with other passengers hired a bus owned by Y and driven by his driver Z. In the midway, the bus was punctured. So, Y transferred X and other passengers to another bus owned by L, and driven by his servant R. The Second bus met with an accident, in a which X died and some other passengers were injured. W, X's widow, sued for her husband's death. In this case which one of the following is correct?

Answer: Option C