The right side of the inequality symbol is a fixed value, and the left side is a quadratic function. If the column is an equation, the solution is X0. The key point of this problem is to distinguish the relationship between "existence" and "arbitrariness", whether it is a sign or a symbol.

If the equation has a solution, the fixed value on the right side of the inequality sign, no matter what value Xo takes, the result must be within the range of the formula on the right side, a >；; 0, the opening is upward, so the value is greater than the minimum value. In other words, "No matter what value Xo takes, there is an X that can make the value of the quadratic function smaller than the fixed value on the right." To sum up, choose B.