Assume an int array, candy, stores the number of candy bars sold by a group of children

Assume an int array, candy, stores the number of candy bars sold by a group of children where candy[j] is the number of candy bars sold by child j. Assume there are 12 children in all ,which of the following code could be used to compute the total number of bars sold by the children?

Scanner scan = Scanner.create(System.in); int value1 = scan.nextInt( ); int value2 = scan.nextInt( ); bars[value1] += value2;

1. adds value1 to the number of bars sold by child value2
2. adds 1 to the number of bars sold by child value1 and child value2
3. adds 1 to the number of bars sold by child value1
4. inputs a new value for the number of bars sold by both child value1 and child value2
5. adds value2 to the number of bars sold by child value1