Read the following context and choose the best option to answer the question.
Context: I got this 16 GB flash voyager for several months . It has a strange problem now . Every time it only last about 20 second when I plugged in . I could copy and open files during that time , but then I can not access the voyager and everything on the voyager disappeared .
Question: What sort of problem might this be ?
Options: 
A. a software error
B. None of the above choices .
C. Human error
D. An accident


A