Given below are four jumbled sentences. Select the option that gives their correct order forming a meaningful and coherent paragraph.
A. Rising temperatures and drought conditions have caused serious problems for human populations all over the world.
B. One area particularly affected by drought has been the central Spanish province of Caceres, where water levels in the Valdecanas reservoir have dropped nearly 30%.
C. Some dramatic changes in landscape brought on by lowering water levels, though, have also led to a number of notable discoveries.
D. As a result, a fascinating site from near pre-history has been recovered here, as per Reuters.