Consider the following statements:
S1: The LRU page replacement algorithm suffers from Belady's anomaly.
S2: Shortest-remaining-time-first scheduling may cause starvation.
S3: The stack is shared by all threads in a process.

1. A(A) S1, S2 and S3 are true
2. B(B) S1, S3 are false and S2 is true
3. C(C) S1, S2 are false and S3 is true
4. D(D) S1, S2 and S3 are false

Pick an option to check yourself, or open the answer below.