The income tax footnote to the financial statements of Southwest Airlines for the year ended December 31, 2019, includes the following information: 14. INCOME TAXES 2018 2017 338 5 904 72 976 398 The provision (benefit) for income taxes is composed of the following: (in millions) 2019 CURRENT: Federal 610 S State 102 Total current 712 DEFERRED: Federal (18) State (6) Change in federal statutory tax rate (a) (31) Total deferred (55) 657 s 299 200 2 301 699 $ (1.270) (1.068) (92) How much of the income tax expense is payable (refundable) in 2019? $610 million $657 million O $712 million ($55) million Unable to determine based on the information given