Which of the following best summarizes the author's opinion of the use of quantum mechanic

s to describe entanglement？

A．It is a useful method, but it is not yet complete.

B．It is the best application of quantum mechanics at present.

C．It is discredited by the fact that entanglement does not behave in ways conforming to existing laws.

D．It is an interesting method, but the analogies we draw from quantum mechanics are not wholly apt.

E．There is experimental evidence that confirms its limitations.