How can a Net Operating Loss be used to offset previous or future income?

Select one:

a. As a carryback of 3 years and then a carryforward of up to 5 years.

b. As a carryback of 2 years and then a carryforward of up to 20 years.

c. As a carryforward of up to 20 years only.

d. As a carryback of 2 years and then a carryforward of up to 5 years.