Which describes a random selection procedure? A. A computer program randomly selects 100 students, splits the list in half alphabetically, and accordingly sends one of the two new forms of the report card. B. A flip of a coin determines which of the two schools will be testing brand A and which will be testing brand B of computerized whiteboards offered for comparison. C. A random process determines which researcher from the team will be observing one of the three schools participating in a study. D. All students located in the math building during the second hour randomly receive one of the three survey forms.