31. The cold fusion episode mentioned in the final paragraph of the passage .... (A) serves as a counter example of scientists using motivated reasoning in science. (B) shows how scientific findings can sometimes be ambiguous in the 1980s. (C) explains how the scientists' misuse of energy in their experiment resulted in faulty findings. (D) is an instance of scientists ignoring data undermining their claims. (E) illustrates how asking right questions can help scientists overcome cognitive biases.