Doug Jones submitted his 2020 tax return on time and elected to file a joint tax return with his wife, Darlene. Doug and Darlene did not request an extension for their 2020 tax return. Doug and Darlene owed and paid the IRS $124,000 for their 2020 tax liability. Two years later, Doug amended his return and claimed married filing separate status. By changing his filing status, Doug sought a refund for an overpayment for the tax year 2020 (he paid more tax in the original joint return than he owed on a separate return). Is Doug allowed to change his filing status for the 2020 tax year and receive a tax refund with his amended return?

In which of the following games is it clearly the case that the cooperative outcome of the game is good for the two players and bad for society? a. two oil companies own adjacent oil fields over a common pool of oil, and each company decides whether to drill one well or two wells.b. two airlines dominate air travel between city a and city b, and each airline decides whether to charge a "high" airfare or a "low" airfare on flights between those two cities.c. two superpowers decide whether to build new weapons or to disarm.d. in all of the above cases, the cooperative outcome of the game is good for the two players and bad for society