$1.$ For the current year, Exeter Corporation has U$.$ S$.$ taxable income of $$500,000,$ which includes $$100,000$ from a foreign division. Exeter paid $$45,000$ of foreign income taxes on the income of the foreign division. Exeter$$s U$.$ S$.$ income tax for the current year is $$105,000.$ Its foreign tax credit is

a$.$ $$45,000$

b$.$ $$20,000$

c$.$ $$21,000$

d$.$ $$34,000$