When May a Plaintiff Request a Right-To-Sue Letter Once a Charge

When may a plaintiff request a right-to-sue letter once a charge has been filed with the EEOC?

A) At any time after the charge is filed.
B) At any time after 180 days have elapsed since the filing of the charge.
C) At any time after 90 days have elapsed since the filing of the charge.
D) At any time after 60 days have elapsed since the filing of the charge.
E) The plaintiff does not have the right to request a right-to-sue letter from the EEOC.