Which of the following are true of interrater agreement as a method of calculating the reliability of a measure?

A) The commonly accepted minimum level of interrater agreement that must be met is 65%.
B) It is determined by finding out the percentage of agreement among raters in the same time period.
C) Critical usages such as hiring decisions require well above 75% agreement among raters.
D) It involves a comparison of scores a rater assigns to the same people in two different time periods.