The code snippet uses `parallelStream()` to print the elements in a potentially non-deterministic order. The first call to `parallelStream().forEach(s -> System.out.print(s));` can output the elements in any order since parallel streams do not guarantee any specific order. The second call to `parallelStream().forEachOrdered(s1 -> System.out.print(s1));` ensures that the elements are printed in their encounter order (the order in which they appear in the list). Given the list order is B, C, A, D, the two sections will output a random order of the elements followed by BCAD in the encounter order. Therefore, the correct answer is BCAD after some random order output.