A psychology lab doing research in dreams has 3 rooms (1,2, and 3), each containing 2 beds (A and B). Two pairs of twins are being studied tonight. Each pair of twins will be assigned to one of the three rooms, and then each twin will be assigned a specific bed in the room. How many ways are there to organize the experiment? (i.e. How many ways are there to assign the 4 subjects to rooms and beds if each pair of twins must share the same room?) - 8 - 24 - 12 - 192 - 480