A sample of 200 nurses ages 18-64 was randomly chosen from the membership of a professional organization for nurses. The researchers wanted to investigate the influence of administrative work on job satisfaction levels of nurses in the U.S. Table 1 shows the summary.

Table 1	Satisfied	Not Satisfied
Job Satisfaction for Nurses in the U.S. and Administrative Workload
High Administrative Workload (>30% of daily work spent on administrativetasks)	24	76
Low Administrative Workload ( <30% of daily work spent on administrative tasks)	62	38

Which of the following is the level of measurement of the variable "Administrative Workload?" Please explain

A. nominal

B. ordinal

C. interval/ratio (scale)