Complete the Following Code Snippet, Which Is Intended to Be

Multiple Choice

Complete the following code snippet, which is intended to be a recursive method that will find the sum of all elements in an array of double values from index to the end of the array: // return the sum of all elements in arr[]
Public static double findSum(double arr[], int index)
{
If (index == 0)
{
Return arr[index];
}
Else
{
_____________________
}
}
Assume that this method would be called using an existing array named myArray as follows:
FindSum(myArray, myArray.length - 1) ;

A) return (findSum(arr, index + 1) ) ;
B) return (findSum(arr, index - 1) ) ;
C) return (arr[index] + findSum(arr, index + 1) ) ;
D) return (arr[index] + findSum(arr, index - 1) ) ;