Nuclear Density Radius Relationship

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The nuclear density of nuclides ‌510B,‌36‌Li,‌2656‌Fe,‌1020‌Ne and ‌83209‌Bi can be arranged as ρBiN>ρFeN>ρNeN>ρBN>ρLiN.
Reason R : The radius R of nucleus is related to its mass number A as R=R0A1∕3, where R0 is a constant.
In the light of the above statement, choose the correct answer from the options given below :

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