18888 Fastco Inc. has had rapid expansion this past year and increased their workforce by 10%. Group insurance participation was over 90%. Fastco Inc. received an increase of 8% on their renewal rates and does not understand why. They were expecting lower rates due to the larger group. What does the premium calculation take into account? group census data and the insurer's claims experience group census data and the insured's claims experience group census data and the plan member's claims experience group census data and the plan sponsor's daims experience Ob Od