36Radiation Properties Uses SafetyMedium1 markA student measures the count rate from a radioactive source. Which method should the student use to remove the contribution made by background radiation?ATake the measurement in an empty room.BMeasure the count rate due to the background radiation on its own and add it to the measurement from the source.CMeasure the count rate due to the background radiation on its own and subtract it from the measurement from the source.DReduce the measurement time.Grade answerGrading criteria