Ariana, Boris, Cecile, and Diego are students in the service club. Three of the four students will be chosen to attend a conference. Which choice represents the sample space, cap s , for this event?

A sample point is a group of three students chosen from the four, and the order of selection does not matter. The possible groups are ABC, ABD, ACD, and BCD, where A, B, C, and D represent Ariana, Boris, Cecile, and Diego. Choice B lists exactly these four groups; choices with repeated arrangements count the same group more than once or leave out a possible group.

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