Westgard Control Rules Utilize a Shorthand System in Which the First

Westgard control rules utilize a shorthand system in which the first designation indicates _____, and the second designation, usually subscripted, indicates ______.

A) the number of observations to be considered, the acceptable limits
B) the number of observations to be considered, the probability of false rejection at that number of observations
C) the allowable error before the run is rejected, the acceptable limits
D) the allowable error before the run is rejected, the probability of false rejection at that level of error