How many squares whose sides are parallel to the axes and whose vertices have coordinates that are integers lie entirely within the region bounded by the line y=πx, the line y=−0.1 and the line x=5.1?<spanclass=′latex−bold′>(A)</span>30<spanclass=′latex−bold′>(B)</span>41<spanclass=′latex−bold′>(C)</span>45<spanclass=′latex−bold′>(D)</span>50<spanclass=′latex−bold′>(E)</span>57