Refer to the following list of liability balances at december 31, 2018. accounts payable $ 17 comma 000 employee health insurance payable 550 employee income tax payable 700 estimated warranty payable (due 2019) 1 comma 500 longminusterm notes payable (due 2022) 35 comma 000 ficalong dashoasdi taxes payable 1 comma 260 sales tax payable 970 mortgage payable (due 2023) 12 comma 000 bonds payable (due 2024) 55 comma 000 current portion of longminusterm notes payable 4 comma 500 what is the total amount of current liabilities?    a. $ 26 comma 480 b. $ 21 comma 280