A team of researchers is working on a project to make a new kind of carbonless fuel. During their experiment, there is an explosion that destroys the lab. While they are cleaning the debris, they discover three pieces of frozen metal. The researchers were excited to report that they had discovered a fuel that burns so clean it becomes cold. Other scientists attempt to make carbonless fuel but are unsuccessful. Which statement best explains why this scenario represents "bad" science?

A. The conditions of the experiment are not replicable or repeatable.
B. The process of making clean fuel is known due to the explosion.
C. The frozen metal was discovered through biased research practices.
D. The result of clean fuel production, the frozen metal, is not observable.