Consider the following parallel code of inter-process communication.
S0;
PAR BEGIN
BEGIN S1; S2; END
S3;
S4;
S5;
BEGIN S6; S7; S8; END
S9
PAR END
S10
Which of the following option is/are true?
1
S1, S3, S4, S5, S6, and S9 are executes parallelly
2
S0, S1, S3, S4, S5, S6, and S9 are executes parallelly
3
S2 can not excutes before S1.
4
S10 can executes at the end.