An electrical engineer has upon hand two boxes of resistors, with five resistors in each box. The resistors in first box are labeled 10 ohms, but in fact their resistances are 9, 10, 11, 12, and 13 ohms. The resistors in the second box are labeled 20 ohms, but in fact their resistances are 18, 19, 20, 21, and 22 ohms. The EE chooses one resistor from each box and determines the resistance of each. Let A be the event that the first resistor has a resistance greater than 11, let B be the event that the second resistor has a resistance less than 20, and let C be the event that the sum of the resistances is equal to 30. List the sample space for this experiment, and specify the subsets corresponding to the events A, B, and C.