In One Version of the Deutsch and Krauss (1960)trucking Experiment

In one version of the Deutsch and Krauss (1960) trucking experiment the two participants were given the opportunity to communicate with one another during the simulation.The results of that variation suggest that

A) communication is an effective means for reducing conflict.
B) the communication of one's intensions can reduce conflict.
C) since the participants communicated mostly threats,it did not quell the conflict.
D) participants were not able to understand others clearly,and so communication had no effect on conflict.
E) personal conflict cannot be undone through communication.