Experiments designed to further our understanding of lightning are not as applicable to "ball lightning" as they are to normal lightning, because it is so rare, unpredictable, and short-lived.
A. Experiments designed to further our understanding of lightning are not as applicable to "ball lightning" as they are to normal lightning, because it is so rare, unpredictable, and short-lived
B. Because it is so rare, unpredictable, and short-lived, experiments designed to further our understanding of lightning are not as applicable to "ball lightning" as they are to normal lightning
C. Because it is so rare, unpredictable, and short-lived, "ball lightning" cannot be studied by the same experiments designed to further our understanding of lightning as normal lightning
D. Because "ball lightning" is so rare, unpredictable, and short-lived, experiments designed to further our understanding of lightning are not as applicable to it as they are to normal lightning
E. "Ball lightning" is not subject to experiments designed to further our understanding of lightning in the same way as normal lightning, because it is so rare, unpredictable, and short-lived
Please explain your answers.