Density of a $2.05 \; M$ solution of acetic acid in water is $1.02\; g/mL$. The molality of the solution is :

Question

( A ) $0.44 \; mol \; kg^{-1}$
( B ) $2.28 \; mol \; kg^{-1}$
( C ) $1.14 \; mol \; kg^{-1}$
( D ) $3.28 \; mol \; kg^{-1}$