Which of the following statements is true?

a. consumer surplus under an optimal two-part tariff is greater than that under a single price monopoly pricing.
b. although consumers reap some consumer surplus under a single price monopoly, society is better off with an optimal two-part tariff pricing.
c. consumer surplus under perfect price discrimination is greater than under a single price monopoly pricing.
d. of the three pricing scheduleslong dashsingle price monopoly, an optimal two-part tariff, and perfect price discriminationlong dashprofit is highest under a single-price monopoly pricing.

Hanna intends to give her granddaughter, melodee, her antique hat pin. this heirloom has been kept under lock and key in the wall vault in the library of hanna's house in virginia. the hat pin is currently the only item in the vault. when hanna is visiting melodee in connecticut, hanna gives melodee the only key to the vault. melodee is grateful for the present and excitedly accepts. in this situation has there been a completed gift?

Ds unlimited has the following transactions during august. august 6 purchases 58 handheld game devices on account from gamegirl, inc., for $140 each, terms 2/10, n/60. august 7 pays $340 to sure shipping for freight charges associated with the august 6 purchase. august 10 returns to gamegirl three game devices that were defective. august 14 pays the full amount due to gamegirl. august 23 sells 38 game devices purchased on august 6 for $160 each to customers on account. the total cost of the 38 game devices sold is $5,448.51. required: record the transactions of ds unlimited, assuming the company uses a perpetual inventory system. (if no entry is required for a transaction/event, select "no journal entry required" in the first account field. round your answers to 2 decimal places.)

When the federal reserve buys bonds from or sells bonds to member banks, it is called monetary policy reserve ratio interest rate adjustment open market operations