The Site Ion Exchange Plant (SIXEP) at Sellafield Ltd.'s nuclear facility in the UK is often described as the 'kidneys' of the plant. What TWO STATEMENTS below are a true description of the function of the ion exchange material? A It is designed to remove radioactive Cs+, Sr²+ and Mg2+ions. B Sodium (Na+) ions can enhance the exchange efficiency. It is designed to remove radioactive Cs*ions only. It is designed to remove radioactive Cs*and Sr²+ ions. E Sodium (Na+) ions can reduce the exchange efficiency. F Sodium (Na+) ions are used to regenerate the columns.

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