A Poll Was Taken Of $100$ Students at a Commuter Campus to Find Out How They

Multiple Choice

A poll was taken of $100$ students at a commuter campus to find out how they got to campus. The results were: $43$ said they drove alone. $31$ rode the bus. $27$ rode in a carpool. $9$ used both carpools and rode the bus. $11$ used both a carpool and sometimes drove alone. $6$ used buses as well as drove alone. $4$ used all three methods. How many are not using any of the three (Region VIII) ? A = {people who drive alone} B = {people who ride the bus} C = {people who carpool} Use the figure (with Regions I to VIII) to answer the question.

A) 25 students
B) 21 students
C) 4 students
D) 6 students
E) 100 students