According to the passage, the use of mobile phone is unlikely to cause ______.

A．the research in Finland found that mobile phone radiation will not affect one's brain
B．mobile phone radiation can cause decreased activity in hundreds of protein in human cells
C．increased protein activity might cause cells to expand
D．Lszczynski' s wife and children will still use mobile phone after his research

A．Mobile phone radiation can increase protein activities and such activities can make the protective shield more permeable.
B．Mobile phone radiation can 'shrink the blood vessels and prevent blood from flowing smoothly.
C．Mobile phone radiation will bring stress to people exposed to it.
D．Mobile phone radiation kills blood cells at a rapid speed.