Terry Trade is an unmarried U$.$S$.$ citizen who lives in the United States. During the current tax year, Terry receives $$140,000$ of net income from a retailing business conducted as a sole proprietorship. All of the sales transactions producing this income involve sales of inventory property. $$50,000$ of this income is attributable to sales of inventory within the United States, $$50,000$ is attributable to sales within Country C and $$40,000$ is attributable to sales within Country D$.$ Terry's personal services are not a material income$-$producing factor in the retailing business. Terry also receives $$10,000$ of interest income from a bank account in a Country D bank. $..$ During the year, Terry pays an income tax to Country C of $20$ percent $($$$10,000)$ on the net income from the retailing business conducted within Country C$.$ Terry also pays an income tax to Country D of $50$ percent $($$$20,000)$ on the net income from the retailing business conducted within Country D$.$ Country D imposes no income tax on interest income earned by nonresident individuals. $..$ Assume that Terry's effective U$.$S$.$ tax rate is $28$ percent and ignore any standard deduction or personal exemption deduction to which Terry may be entitled. How much foreign tax will Terry be allowed to credit against her U$.$S$.$ income tax? please show work