subcell provides. The power cell is functional if and only if the sum of the two voltages of the subcells is at least 6 volts. An experiment consists of measuring and recording the voltages of the two subcells. Let A be the event that the power cell is functional, let B be the event that two subcells have the same voltage, let C be the event that the first subcell has a strictly higher voltage than the second subcell, and let D be the event that the power cell is not functional but needs less than one additional volt to become functional. DefineasamplespaceSfortheexperimentasaset of ordered pairs that makes it possible for you to express the four sets above as events. Express each of the events A, B, C, and D as sets of ordered pairs that are subsets of S. Express the following set in terms of A, B , C , and/or D: {(x, y) : x = y and x + y ? 5}.