How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M $HNO_3$ ? The concentrated acid is 70 % $HNO_3$.

Question

( A ) 90.0 g conc. $HNO_3$
( B ) 45.0 g conc. $HNO_3$
( C ) 54.0 g conc. $HNO_3$
( D ) 70.0 g conc. $HNO_3$