2. In the following example, assume that all system and library calls complete without error. Also assume each program statement is atomic. (a) Please write down all possible outputs when running this program. [3] int main () { int i = 1; if (fork()) i++; elseif (fork()) --; else i++; printf("%d ", i); } (b) Please briefly explain why the output is not deterministic. [1] (c) How many processes are created in total by the operating system when running this program? [1]