单选题

class A { &nbsp &nbsp public: &nbsp...

Question

class A {
    public:
        virtual void Foo() = 0
        virtual void Print() { printf("A\n") }
}
class B: public A{
    public:
        void Foo() override { printf("FOO\n") }
        void Print() override { printf("B\n") }
}
int main() {
    A* ptr1 = new A
    A* ptr2 = new B
    ptr1->Print()
    ptr2->Print()
    return 0
}

A. A,B

B. A,A

C. B,B

D. 编译报错，无法执行