Assertion (A): Relation between normality and density is $\text{N}=\frac{10\times d\times x}{\text{GEW}}$

Reason (R): Relation between molality and mole fraction is $\text{m}=\frac{{\text{X}}_{\text{A}}\times 1000}{{\text{X}}_{\text{B}}\times {\left(\text{GMW}\right)}_{\text{B}}}$                           

A is incorrect and R is correct

Both A and R are true and R is the correct explanation of A

Both A and R are true and R is not correct explanation of A

A is correct and R is incorrect