southlawn incorporated's taxable income is computed as follows: book income before tax $ 2,405,600 net permanent differences (512,000) net temporary differences (189,000) taxable income $ 1,704,600 using a 21% rate, compute southlawn's tax expense per books and tax payable.
a.Tax expense per books $643,824; tax payable $579,564.
b.Tax expense per books $579,564; tax payable $643,824.
c.Tax expense per books $817,904; tax payable $579,564.
d.None of the choices are correct.