Teng XS WC premium formula
Formula on pg 428 (pg 16 of pdf).
[EL*XL*(1+ULAE) + SP*GO]/(1-A-T-p)
Second paragraph under 2. Expense on the next page: "Since XS WC does not cover services for the underlying claims, its ULAE and GO expense would be charged on XS claims only, and are much lower than the expense charges under an LDD plan."
Why, then, is the ULAE factor multiplied by XL but the GO expense is still multiplied by SP? Is this SP different from SP for LDD (ie, is this an SP for XS only, while SP for LDD was the full-coverage premium)?