A certain Optically Stimulated Luminescence (OSL)-based dosimeter includes filters that attenuate different parts of the radiation spectrum. There is an unfiltered area and three filtered areas containing: a plastic filter, an aluminum filter, and a copper filter. Match each of the areas or filters to its purpose in the monitoring of α, β, and γ radiation types. 


I. unfiltered area
II. plastic filter
III. aluminum & copper filters
IV. monitors exposure to β-radiation
V. monitors exposure to γ-radiation
VI. monitors exposure to α-radiation

• A. I → VI, II → IV, and III → V
• B. I → IV, II → V, and III → VI
• C. I → V, II → IV, and III → VI
• D. I → VI, II → V, and III → IV

Answer: (A)