Read the following context and choose the best option to answer the question.
Context: My classes have been going well , my newswriting class is messing with me though . it sucks because I never know when things are due . I am pretty sure I have to write an article about a speech I saw on Thursday .
Question: What may be the reason why they do n't know when things are due ?
Options: 
A. None of the above choices .
B. They sleep during class .
C. They never got a sheet with deadlines .
D. The teacher does n't communicate very well .


D