On a Survey,students Were Asked to Answer "Yes" or "No

On a survey,students were asked to answer "yes" or "no" to the following questions: (a) Do you ever have to do homework outside of school? (b) Should the hours that school is in session be extended? (c) Do you feel it is too easy to make good grades? These are examples of _____ questions.

A) open-ended
B) multiple choice
C) dichotomous
D) bipolar
E) tabulation