Which expression could be used to solve this problem? tom is making lunch for his 3 children. he wants to give each child 2 carrot sticks and 5 pieces of celery. how many of these vegetables does tom need? a. 2 × (3 × 5) b. 3 × (2 + 5) c. 3 × 2 + 5 d. 5 + 2 × 3