The construct
cobegin
Statement1;
Statement2;
coend
means Statement1 and Statement2 are to be executed in parallel. The only two atomic actions in this construct are loading thevalue of a variable and storing into a variable.For the program segment
x:=0；
y:=O；
cobegin
begin
x:=l;
y:=y+x;
end;
begin
y:=2;
x:=x+3;
end
coend
Which of the following indicate(s) possible values for the variables when the segment finishes execution
Ⅰ．x=1,y=2 Ⅱ．x=1,y=3 Ⅲ．x=4,y=6