30% of all students in a class commute by public transportation. If 40% of the students aspire to be scientists, which of the following can be the percentage of students who do not commute by public transportation and do not aspire to be scientists?
I.	5%
II.	40%
III.	50%  Choose the correct choice:  A) I ONLY  B) II ONLY  C) III ONLY  D) I AND III  E) II AND III
30% Students use public transportation. This means 70% students do not use public transportation. 40% students aspire to be scientists means even if all these students use public transportation, minimum 70% - 40% = 30% students do not use public transportation and do not aspire to be scientists.This means correct answer is between 30% and 70%   Answer : II AND III.70  - 40= 
<gadget id="calculator">70  - 40</gadget>
<output>30</output>
30% students do not use public transportation and do not aspire to be scientists.This means correct answer is between 30% and 70%   Answer : II AND III.
<result>E</result>
30% of all students in a class commute by public transportation. If 40% of the students aspire to be scientists, which of the following can be the percentage of students who do not commute by public transportation and do not aspire to be scientists?
I.	5%
II.	40%
III.	50%