Revaluation surplus distribution in partnerships

Steps:

• Revalue assets/liabilities on admission; debit premises $12,000 indicates asset increase, crediting revaluation account$12,000.
• Share revaluation gain in old profit-sharing ratio (X:Y = 1:1, equally) among existing partners only; Z gets none.
• Credit gain to partners' current accounts (common for adjustments); total gain $12,000 split$6,000 each to X and Y.
• No credits to Z or capitals based on given details; amounts in choices exceed $12,000 total.

Not enough information: Question provides only $12,000 premises debit but choices show unrelated large amounts ($40,000+), preventing matching to any option.

Final answer: Not enough information.