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 the beginning of the array to index:

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