Given the following code snippet, which lambda expressions are the best choices for an accumulator? (Choose two.) 

A. (a,b) -> (a-b)

B. (a,b) -> 5

C. (a,b) -> i++

D. (a,b) -> {words.add("awesome"); return 0;}

E. (a,b) -> {return 0;}

F. (a,b) -> words.add("awesome").

import java.util.*; import java.util. function. *; public class GoodAccumulator { int i = 0; List words = new ArrayList (); public void test() { BiFunction x = System.out.print (List.of (1,2,3,4,5) }} .parallelStream() .reduce (0,x, (s1, s2) -> sl + s2));