Read the following code segment and fill in blank #3. class StackType { public: StackType(int max); // max is stack size. StackType(); // Default size is 500. // Rest of the prototypes go here. private: int top; int maxStack; // Maximum number of stack items. float* items; // Pointer to dynamically allocated memory. }; StackType::StackType(int max) { ___________ = max; // 1 top = ____________; // 2 items = new __________; // 3 } StackType::StackType() { ____________ = 500; // 4 ___________ = -1; // 5 __________ = new ItemType[500]; // 6 }; A) ItemType[length] B) maxStack C) items[maxStack] D) ItemType[maxStack]