Roof covering Wind Mit

I have a wind mitigation inspection scheduled for this week. The roof covering is original installed with a permit in 1999 when the home was built. Can I check “A” assuming the roof covering met FBC product approval listing current at the time, or will I need actual product approval numbers to allow me to check “A”.?
Can anyone explain why the date of 03/01/02 is the cut off date noted in option “A”?

Take the free online Nachi Wind Mitigation Class.

FBC is used for outside HVHZ and yes application date must be 3/1/2002 or later to comply