Advocates of revolutionary distributed computing argue that the traditional operating system has become（）, akin to placing a baton-wielding orchestra conductor at the front of a session of jazz musicians.

A.essence…riches
B.skin…friendship
C.dermis…usefulness
D.kernel…camaraderie
E.anatomy…spirit

A. It offers evidence that contradicts the theory outlined in the previous paragraph.
B. It presents a specific example of the application of the theory discussed in the previous paragraphs.
C. It explains data that the researchers mentioned in the first two paragraphs have yet to successfully analyze.
D. It qualifies the statistical evidence described in the previous paragraph.
E. It begins a detailed description of the theory roughly outlined in the previous two paragraphs.