which Access Layer Switch will assume the discarding role?

At the end of an RSTP election process, which port and on which Access Layer Switch will assume the discarding role?

A.
Switch3, port fa0/1

B.
Switch3, port fa0/12

C.
Switch4, port fa0/11

D.
Switch4, port fa0/2

E.
Switch3, port Gi0/1

F.
Switch3, port Gi0/2