When Negotiating with a Vendor,the Best Outcome for a Retailer

When negotiating with a vendor,the best outcome for a retailer would be to:

A) dismiss the negotiation if there's no agreement and ultimately cancel the vendor relationship.
B) leave the negotiations with an advantage over the vendor.
C) have mutual gain.
D) give the vendor the advantage in the negotiation only to use it in your favor for the following season.
E) agree to disagree on performance thresholds.