How many grams of concentrated nitric acid solution should be used to prepare 250mL of 2.0M $$HNO_{3}$$? The concentrated acid is 70% $$HNO_{3}$$

A

$$54.0 g conc.HNO_{3}$$

B

$$45.0 g conc.HNO_{3}$$

C

$$590.0 g conc.HNO_{3}$$

D

$$570.0 g conc.HNO_{3}$$