Also, i have no clue what is to be selected in that drop down where it says 12/31 and 12/31 bal.

Wildhorse Advertising Company's trial balance at December 31 shows Supplies $8,200 and Supplies Expense $0. On December 31, there are $3,200 of supplies on hand. Prepare the adjusting entry at December 31, and using T-accounts, enter the balances in the accounts, post the adjusting entry, and indicate the adjusted balance in each account. (Credit account titles are automatically indented when the amount is entered. Do not Indent manually.) Date Account Titles and Explanation Debit Credit Dec. 31 Supplies Expense $5,000 Supplies $5,000 Supplies 12/31 12/31 Bal Supplies Expense SHOW LIST OF ACCOUNTS LINK TO TEXT WHUMUTLU HUVILI U mpany's trial balance at December 31 shows Supplies $8,200 and Supplies Expense $0. On December 31, there are $3,200 of supplies on hand. Prepare the adjusting entry at December 31, and using T-accounts, enter the balances in the accounts, post the adjusting entry, and indicate the adjusted balance in each account. (Credit account titles are automatically Indented when the amount is entered. Do not indent manually.) Date Account Titles and Explanation Debit Credit Dec. 31 Supplies Expense $5,000 Supplies $5,000 Supplies Supplies Expense