Katrina is making three batches of cookies for an upcoming picnic. She needs sugar for all three recipes;so she adds it to her grocery list. If her first batch of cookies requires 160 grams, her second batch needs 250 grams, and her third batch needs 180 grams, about how much sugar does she need? A) 550 g B) 600 g C) 650 g D) 700 g