The school board administered a reading test to all eighth-grade students at High Achievers Charter School and determined that 10%, percent of them were reading below grade level. Based on this data, which of the following conclusions are valid? Choose 1

A. 10%, percent of students in this sample are reading below grade level, but we cannot conclude anything about the eighth-grade students at HACS.
B. 10%, percent of all students at HACS are reading below grade level.
C. 10%, percent of all eighth-grade students at HACS are reading below grade level.