A γ-রশ্মি>β-কণা>α-কণা
B α-রশ্মি>β-কণা>γ-কণা
C γ-রশ্মি>α-কণা>β-কণা
D β-রশ্মি>α-কণা>γ-কণা
Correct Answer: Option A
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