How does M&S keep existing customers happy?​

Upon completion of the northwest-corner rule, which source-destination cell is guaranteed to be occupied? a. top-leftb. the cell with the lowest shipping costc. bottom-leftd. top-righte. bottom-right

What type of negotiating strategy requires the supplier to open its books to the purchasers? a. competitive biddingb. cost-based price modelc. price-based modeld. market-based price modele. transparent negotiations

Which external factor has enabled addition of special effects in advertisements and tracking of responses of customers over websites?