Study the following example, and answer:

a. What is a static array and what is a dynamic array?

b. What is the advantage of using a dynamic array? And what could be the disadvantage?

Static Array:

int arr[10];

const int ARR_SIZE = 10;

int arr[ARR_SIZE];

Dynamic Array:

int *arr;

int arrSize = 0;

arr = new int[arrSize];