And then a few of us slipped out early to set up the picnic in Princes Street Gardens . The catering was done by Valvona and Crolla , which is apparently the best deli in the UK - and I believe it , because everything was SO good . It was nice for all of us to be able to share one big picnic together - I think it 's the only meal we ' ve eaten together since the first night here .
According to the above context, choose the best option to answer the following question.
Question: What may be the reason they slipped out early ?
Options:
A. They wanted to avoid sitting next to other people .
B. They wanted to catch the sunset later at night .
C. The park gets crowded as the day goes on .
D. They wanted to be the first so they could brag .


C