which of the following tax rules applies to an excess foreign tax credit (ftc) that arises in 2018?

A. The excess FTC is first carried back to 2017 and any excess is carried forward for 10 years.

B. The excess FTC is first carried back to 2016, then 2017, and any excess is carried forward for 20 years.

C. The excess FTC is first carried back to 2015, then 2016, then 2017, and any excess is carried forward for 5 years.

D. The excess FTC is first carried forward 10 years, with no carry back allowed.