Nuclei

Four statements are given (A is mass number) :
A. The volume of a nucleus is proportional to $A^{1/3}$.
B. The volume of a nucleus is proportional to A.
C. The difference in mass of an atom and its nucleus is called the mass defect.
D. The difference in mass of a nucleus and its constituents is called the mass defect.
Choose the correct answer from the options given below :

${}_{82}{}^{290}X\stackrel{\alpha }{\to }Y\stackrel{{\mathrm{e}}^{+}}{\to }Z\stackrel{{\mathrm{\beta }}^{-}}{\to }P\stackrel{{\mathrm{e}}^{-}}{\to }Q$

In the nuclear emission stated above, the mass number and atomic number of the product Q respectively, are :

[NEET 2024]