Assume aa is a pointer of  int type, and has been allocated enough memory :  int* aa = new int; Which line assign value 10 by using dereference and then release the memory correctly?   Question 19 options:   A.      aa  = 10;     delete aa*;   B.   *aa = 10;    delete aa;   C.    *aa = 10     delete []aa;   D.    aa = 10;     delete [] aa;

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Concept of Pointer Parameter

Pointers are the special variable that stores the variable address, instead of storing the variable value. Pointer is a powerful feature of a programming language. A pointer is mostly used to save memory space and improve execution time.