Which of the following is a correct statement in regard to an NOL?

A. The NOL deduction is limited to 80% of taxable income (determined without regard to the deduction), in losses that arise in tax years beginning after December 31, 2017. B. Beginning in tax years after December 31, 2017, taxpayers may take 100% of an NOL in the year following the loss. C. Taxpayers will need to make a distinction between NOLs that occurred before January 1, 2018, and after December 31, 2017, when computing the NOL deduction. D. The taxpayer is allowed to carry backward or forward an NOL deduction if the loss occurred in 2018.