Which of the following is TRUE about user-level threads and kernel-level threads?
S1: Typically if a user-level thread is performing blocking system call then the entire process will be blocked
S2: Kernel level threads are designed as dependent threads
S3: Every thread has its own register and stack1
S1 and S2 only
2
S2 and S3 only
3
S1 and S3 only
4
All are true