Explanation:

- Option 1: Fixed capital accounts typically have a credit balance because they represent long-term investments by owners. However, they can occasionally have a debit balance due to withdrawals exceeding investments.

- Option 2: Current accounts can indeed have both positive and negative balances. They reflect everyday transactions, profits, and losses, which can fluctuate depending on business activity.

- Option 3: Fluctuating capital accounts can also have either a positive or negative balance, as these accounts capture more day-to-day variations and personal drawings or additional contributions by partners.

Option 4: All of the above statements are true.