PO receipting Qs

Hi,

I have a couple of Qs on PO receipting:

1) By looking at F43121, is it possible to find out which receipt option was taken while doing the receipting (1,7,9 etc)?

2) What is the difference between cancelling a PO line from P4310 (row exit - cancel line) vs PO receipt program (PO receipt option 9)? Will canceling PO from PO receipt application create  a record in F43121?

Thank you.