Which of the Following Statements Concerning Particles and Waves Is/are

Which of the following statements concerning particles and waves is/are correct?

A) Uncharged particles travel in straight lines until they collide with something.
B) When two particles meet in space, they never produce an interference pattern.
C) When a large number of small particles exchange a small amount of energy, the exchange cannot be distinguished from that of a wave.
D) When two waves of equal intensity and originating from coherent sources meet in space, the resulting wave can have an intensity anywhere from zero to 4 times the intensity of each of the original waves.
E) All of the above are correct.