A company sells peanut butter in cylindrical jars. Marketing research suggests that using wider jars will increase sales. If the diameter of the jars is increased by 25% without altering the volume, by what percent must the height be decreased?
<spanclass=′latex−bold′>(A)</span>10<spanclass=′latex−bold′>(B)</span>25<spanclass=′latex−bold′>(C)</span>36<spanclass=′latex−bold′>(D)</span>50<spanclass=′latex−bold′>(E)</span>60