Final answer:
Option 1: Debit: Income Tax Expense $6 million and Credit: Deferred Tax Liability $6 million. Retained earnings would decrease by $6 million.
Step-by-step explanation:
The appropriate journal entry to record Bronson's income tax expense in 2013 would be Option 1: Debit: Income Tax Expense $6 million and Credit: Deferred Tax Liability $6 million. This journal entry reflects the recognition of income tax expense and the corresponding increase in the deferred tax liability.
Retained earnings would need to be revised to account for this change. Since the income tax expense is $6 million, retained earnings would decrease by $6 million.