This is a question from Operating Systems.

Consider the following program segments for two different processes executing concurrently, where A and B are not shared variables, but X starts at zero and is a shared variable. process 1: for a := 1 to 5 do x := x + 2; process 2: for b := 1 to 5 do x := x + 2; If these two processes execute only once at any speed, what are the possible resulting values of x? Explain your answers carefully.