The correct amount of prepaid insurance shown in a company's December 31, 2023, balance sheet was $900. On July 1, 2024, the company paid an additional insurance premium of $600. In the December 31, 2024, balance sheet, the amount of prepaid insurance was correctly shown as $500. The amount of insurance expense that should appear in the company's 2024 income statement is:

$1,000.

$600.

$1,400.

$1,500.