...S&P Global Ratings assigned its '### (sf)' rating to Citibank Credit Card Issuance Trust's (CCCIT's) fixed-rate Citiseries class 2018-A7 notes. The rating reflects: + Our view that the 15.50% credit support provided by the class B and C notes and the series 2009 credit card participation certificate is sufficient to withstand the simultaneous stresses we apply to our 6.25% base-case loss rate, 16.50% base-case payment rate, 15.00% base-case yield, and 3.00% purchase rate assumptions. In addition, we used stressed excess spread to assess whether, in our view, the available credit support is commensurate with the assigned '### (sf)' rating on the class 2018-A7 notes. We based all of the stress assumptions outlined above on our criteria and assumptions for credit card transactions (see "U.S. Credit Card Securitizations: Methodology And Assumptions," published Aug. 24, 2017). + Our view that the 5.00% minimum seller's interest is sufficient in our stress assumptions to absorb dilutions or...