Read the following context and choose the best option to answer the question.
Context: Finally , I called the United reservations number and reported the Dulles domestic check - in problem . The representative placed me on hold and checked with IAD operations . She came back on line and told me that there was a shortage of employees that day . I was very satisfied with that answer , though this did n't excuse United management 's responsibility to at least direct passengers , employees , and contractors to keep the lines moving .
Question: Why would I be satisfied with the reason for my trouble with United ?
Options: 
A. None of the above choices .
B. I am glad because I was able to speak with an old friend at customer service .
C. I will understand the reasoning for the problem I had with United .
D. I am glad because they gave me a full refund .


C