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: $41$ said they drove alone. $31$ rode the bus. $29$ rode in a carpool. $9$ used both carpools and rode the bus. $10$ used both a carpool and sometimes drove alone. $4$ used buses as well as drove alone. $2$ used all three methods. How many are B only (Region II) ? 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) 31 students
B) 17 students
C) 29 students
D) 12 students
E) 20 students