$($Table: Christie' and Sotheby's$)$ Refer to the table. Each cell of this table presents the revenues earned by the auction houses Christie's and Sotheby's. Revenues are based on the type of commission each firm charges its clients, as well as what commission the other charges. Christie's revenues are listed first in each cell, then Sotheby's. If both firms cooperate and act like a cartel:

$\backslash$table$[[,,$Sotheby's Strategic,$],[,,$High Commission,Lot Commission$],[$Christie$\text{'}$s$,$High Commission,$$4$ milion. $54$ milion,$52$ milion $$6$ milicn$],[$Strategies$,$Lour Commission,S$6$ milion, $$2$ milion,$53$ millon, $53$ malicun$]]$

Christie's will charge a low commission and Sotheby's will charge a high commission

both Christie's and Sotheby's will charge a low commission

Christie's will charge a high commission and Sotheby's will charge a low commission

both Christie's and Sotheby's will charge a high commission