At April 1, 2020, the balance in Rosie's supplies account was $3,500. During April, Rosie purchased supplies of $3,000 and used supplies of $4,000. At the end of April, the balance in the Supplies account should be: A)$3,500 B) $4,500 C)$10,500 D) $2,500 For this and the next question, assume that Rosie performs a physical count of the Supplies inventory at the end of April and it is $1,000 less than your answer, above. What does Rosie need to do from an accounting perspective and why? What does Rosie need to do from a management controls system perspective