Using the P$2$P Data Model as shown, what is LFA$1$ : EKKO table relationship type?

Remember that in the P$2$P Data Model, the Activity table is called $\_$CEL$\_$P$2$P$\_$ACTIVITIES, and the Purchasing Document Item Table $($EKPO$)$ is the Case table.

A$.$

$1$:N

B$.$

N:$1$

C$.$

Indirect $1$:N

D$.$

N:M