Students in a high school woodworking class wants to conduct a survey to determine the percentage of students in the school who are willing to pay a fee for participating in workshops. Students in each home room are alphabetically sorted by last name. A simple random sample of 12 home rooms was selected and the survey was given to all 20 students in each home room. This plan is an example of which type of sampling? a)Cluster

b)Stratified random

c)Convenience

d)Simple random

e)Systematic