On January 1, 2010 you had in supplies inventory $1200. On February 1 you purchased supplies costing $1800 and you debited supplies expense. On April 1, you purchased supplies costing $500 and debited supplies. On November 1, you purchased $900 of supplies and debited supplies expense. At the end of the year you had $300 of supplies on hand. You did not make an adjusting entry. The books are closed. What is the entry to be prepared at the beginning of 2011?