fork.science

Question: Fork system calls via python: does the cloned and original process know who is the original?
Hint: Clone is child of original, which makes original the parent.

A No, the fork call does not return anything B No, the fork call returns the same number to both the original and the clone
C Yes, the fork call returns to original the id of the clone, but to clone it returns the number 0 (which is not a valid id) D Yes, the fork call returns to original the number 0 (which is not a valid id), but to clone it return the id of the original