The description of Vintage Style Inc.’s group insurance plan indicates that therefund accountingmethod is used. In refund accounting, premiums are adjusted based on the actual claims experience. If claims are lower than expected, the insurer may issue a refund or reduce future premiums. Conversely, if claims exceed expectations, premiums may increase at renewal. This funding formula is commonly used in group plans to align premium costs with the actual risk and claims experience of the group, which is consistent with the plan characteristics mentioned in the LLQP material​​.