The correct statement is/are

Options

A. Density of nucleus is independent of mass number (A)
B. Radius of nucleus increases with mass number (A)
C. Mass of nucleus is directly proportional to mass number(A).
D. Density of nucleus is directly proportional to mass number.

Explanation

`R=R_(0)A^(1//3)`
Radius of nucleus `R prop A^(1//3)`
So choice (b) is correct.
Density =Mass/Volume `=(Axx1.67xx10^(-27))/(4/3 piR_(0)^(3)A)`
Density `prop A^(0)`
i.e. Density is independent of mass number.
So, choice (a),(b) and (c) are correct and choice (d) is wrong.