$K_f$ for water is $1.86 \;K\;mol^{-1}$. If your automobile radiator holds 1.0 kg of water, how many grams of ethylene glycol $(C_2H_6O_2)$ must you add to get the freezing point of the solution lowered to $-2.8^{\circ}C$ ?

Question

( A ) 39 g
( B ) 27 g
( C ) 72 g
( D ) 93 g