How many ordered pairs of positive integers (b,c) exist where both x2+bx+c=0 and x2+cx+b=0 do not have distinct, real solutions?<spanclass=′latex−bold′>(A)</span>4<spanclass=′latex−bold′>(B)</span>6<spanclass=′latex−bold′>(C)</span>8<spanclass=′latex−bold′>(D)</span>10<spanclass=′latex−bold′>(E)</span>12