In the following assertions for the relationship between strictly local optimal solution and strictly globally optimal solution, which ones are correct ? （ ）

A、The strictly local optimal solution for a constrained convex programming problem is a stationary point of cost function.
B、The strictly local optimal solution might not be unique but the strictly global optimal solution is unique(if it exists).
C、The strictly global optimal solution is also a strictly local optimal solution.
D、The stationary point of constrained convex programming problem is a strictly global optimal solution if the cost function is strictly convex.