Some years ago, chemists at 3M Corporation were trying to create a super-strong glue. Somehow they got their molecules twisted and came up with one of the weakest glues ever made. But, rather than pouring it down the drain, they tried coating some paper with it, and the "Post-It Note" was born. In this case, 3M was acting as a(n)

Refer to the table above. When the price is ________ and the quantity is ________, social surplus is maximized

A) $8; 5 units B) $6; 4 units C) $4; 4 units D) $2; 8 units

Sellers who charge different prices to different customers can increase their net revenue

A) by forcing some customers to pay more for the product than it is worth to them. B) by getting high-price customers in effect to subsidize sales to low-price customers. C) if the demand of some customers for the product enables the sellers to build volume by selling at prices below marginal cost. D) if they can prevent customers from reselling to one another.