Gibson Company paid $24,000 on June 1, 2017 for a two-year insurance policy and recorded the entire amount as Insurance Expense. The December 31, 2017 adjusting entry is

a. No entry
b. Unearned Rent Revenue 8,000
Rent Revenue 8,000
c. Rent Revenue 8,000
Unearned Rent Revenue 8,000
d. Unearned Rent Revenue 16,000
Revenue Revenue 16,000