I received a 12C. how do i prove a schedule a to them for line 8 on my return when i filed standard

[merrianne2019]

I received a 12 C letter from the IRS requesting a schedule A form for Line 8 on my return. Turbo Tax filed me as standard so I do I prove schedule A to them?

[JulieR]

Call the telephone number listed on the letter you received and ask if IRS still requires this information. You'll be able to get clarification by speaking with an IRS representative.