Alandlord is renting out an apartment and has three prospective tenants. the first tenant is willing to pay $1200/month, the second tenant is willing to pay $3000/month, and the third tenant is willing to pay $2000/month. each potential tenant knows the valuations of the other tenants. of the following methods of renting the apartment, which would generate the greatest revenue? a sealed first-price auctiona sealed second-price (vickrey) auctiona fixed price of $1900/montha fixed price of $2200/month