What does the following code segment do to the array a[], given that the current_sizevariable holds the number of valid elements currently in the array? int element = 0;
current_size++;
for (int i = current_size - 1; i > pos; i--)
{
a[i] = a[i - 1];
}
a[pos] = element;

a. It shifts all the array elements one position to the left (lower index).
b. It shifts all the array elements one position to the right (higher index).
c. It removes the element at index pos, while preserving the ordering of all other elements.
d. It inserts an element at index pos, while preserving the ordering of all other elements.