In the code below:

class MyClass {

public: MyClass() {cout <<"MyClass constructed ";}

~MyClass() { cout <<"MyClass destroyed ";}

};

int main () {

MyClass * pt;

pt = new MyClass[3];

// ...

return 0;

}

before the main() finish in the code before a delete instruction is needed.

Which of the following options is correct?

a) delete pt;

b) delete [] pt;

c) for (int i =0; i<3; i++) { delete pt[i]; }