I ' m going to take a nap now . Also , just on a random aside , Buena Vista Social Club was like , the most boring documentary ever . The only cool thing was the street scenes of Cuba , and the interviews with Ibrahim Ferrer .
According to the above context, choose the best option to answer the following question.
Question: What may be the reason for them taking a nap ?
Options:
A. They slept too much the night before .
B. They are sick .
C. They had a long day .
D. They are depressed .


C