AC88U Link aggregation

Hello!

I need to connect my Qnap NAS to the AC88U router with both ethernet lan.

I configured the link aggregation on asus router (lan port 1 and 2) and also on the nas side.

During the configuration on the qnap nas it ask me for "desired hash policy for 803ad trunking" and I can choose beetwen:

Layer 2 (MAC)
Layes 2+3 (MAC+IP)

What I have to choose?
thank you