A. Incorrect. In a filter system, breakthrough can occur as a result of a hole in the filtering medium, a loss of filter aid, or a failure of an individual element in the filter.
B. Correct. In a filter system, breakthrough can occur as a result of a hole in the filtering medium, a loss of filter aid, or a failure of an individual element in the filter.
C. Incorrect. In a filter system, breakthrough can occur as a result of a hole in the filtering medium, a loss of filter aid, or a failure of an individual element in the filter.
D. Incorrect. In a filter system, breakthrough can occur as a result of a hole in the filtering medium, a loss of filter aid, or a failure of an individual element in the filter.