Step 1: Look at the effect on the capital account:
A deduction is any item debited to the retiring partner's capital account. Credit items like reserves or a revaluation gain increase his claim.
Step 2: Classify the items:
Debit balance of current account: debit. Written-off goodwill share: debit. Accumulated loss share: debit. Revaluation loss share: debit.
Step 3: Confirm with journal entries:
For example: Retiring Partner's Capital A/c Dr. to Goodwill A/c, Retiring Partner's Capital A/c Dr. to Revaluation A/c (for a loss), Retiring Partner's Capital A/c Dr. to Profit and Loss A/c (for a loss). Each entry debits the capital account.
Step 4: Conclusion:
All four are deductions, which matches option 3.
Final Answer:
All four items are deductions, option 3.
\[ \boxed{\text{(A), (B), (C) and (D) (Option 3)}} \]