Answer :
X/Y means,
[tex]x\in X\text{ and x}\notin Y[/tex]Thus, X/Y is a null set.
[tex](\varphi)[/tex]Thus, option (B) is the correct solution.
X/Y means,
[tex]x\in X\text{ and x}\notin Y[/tex]Thus, X/Y is a null set.
[tex](\varphi)[/tex]Thus, option (B) is the correct solution.