The risk priority number (rpn) is the measure of risk related to a particular failure mode. the ratings for each category (severity, occurrence, and detection) are on a 1 to 10 scale. if a fmea has 10 failure modes with rpn numbers ranging from 50 to 300, an improvement team's recommended actions should focus on which of the following? a. work on those failure modes with rpns greater than 50b. use the pareto principle to prioritize the highest rpnsidentify failure modes with high severity rankings, followed by high rpn numbersc. identify failure modes with high severity rankings, followed by high rpn numbersd. use the pareto principle and start with the top 20% of the failure modes