With no explanation, label text_A→text_B with either "DON'T KNOW", "NO" or "YES".
text_A: The World Health Organization has classified radio frequency electromagnetic radiation as Group 2B - possibly carcinogenic. This group contains possible carcinogens such as lead, DDT, and styrene. Epidemiologists have run studies to try to find any relationship between the development of tumors in the brain and use of cell phone during participants' lives, and these studies have not drawn firm conclusions, and have only been able to say that is any such effect exists, it can't be significantly large.
text_B: Although it would be highly misguided to assume causation from correlation, could someone reading this passage get the idea that cell phones might actually slow down the growth of cancer cells in the human brain that would otherwise have come about from some other cause?
NO.